Representing tsundere: Aisaka Taiga (Toradora!), Makise Kurisu (Steins Gate), Sakura (Naruto), Shana (Shakugan no Shana), Misaka Mikoto (Toaru Majutsu no Index/Railgun), Tomori Nao (Charlotte), Fujibayashi Kyou (Clannad), Toosaka Rin (Fate/ Stay Night: Ultimate Blade Works), Victorique de Blois (Gosick), Mine (Akame ga Kill), Kallen Stadtfeld (Code: Geass), Maki Nishikino (Love Live!), Kaname Chidori (Full Metal Oanic), Ayase Shinomiya (Guilty Crown), Azunyan (K-ON!), Izumi Akazava (Another) etc... There are just too many. Now, if you are quite the newbie in the anime world you'd probably be asking now how to easily recognize the tsundere in an anime. Here are some hints:
Did you know that, according to statistics, more than 200 anime shows and movies appear every year on TV in Japan. Also Japanese Anime make up 60% of the total world animation production. Now that's some animation that has to be produced there every year. Gladly we have many and with many I mean approximately 1058 (according to the number listed on My Anime List) anime production studios all over Japan. Some of them have a long lasting tradition in Japan, some studios are winners of prestigious awards and some of them just fascinate us with their work. Here for you is a list of Top 10 Anime Production Studios that really deserve world's attention and especially the attention of every single otaku out there. I've done quite the research and here is the result. Enjoy! 
Place 10 in this ranking is the Kyoto Animation Studio that was founded in 1981. They had their breakthrough after producing a very popular anime called "Free!". Their work "Violet Evergarden" was the first to win the Grand Prize in the Kyoto Animation Awards. Today they are famous for the following anime: Clannad, Clannad: Afterstory, K-On!, Hyouka, Kyoukai no Kanata, Lucky Star and Suzimaya Haruhi no Yuuutsu. 
First thing that comes to my mind when I hear Ufotable is amazing animation. Every Ufotable anime I have watched, old and new, has an amazing animation and probably have one of the best animations I have seen. It is a rather new studio founded in 2000. representing Ufotable: Fate/ Zero, Fate/ Stay Night, Kara no Kyoukai, God Eater and Tales of Zestiria the X. I believe that in the future we'll see many great works from Ufotable. 
I think this is the production studio of my childhood. Toei Animation was founded in 1956 and has won many awards so far including the Animage Anime Grand Prix Award for the anime Galaxy Empress 999 (1981), Saint Seiya (1987) and Sailor Moon (1992). As mentioned in the beginning, it is the studio of my childhood because they are the producers of One Piece, Dragon Ball (Z), Digimon and Sailor Moon and other popular anime such as: Neon Genesis Evangelion, Lovely Complex and World Trigger.
Sunrise was founded in 1972 as a subsidiary of Bandai Namco Holdings and has since then been an important part of the anime industry. I think it is not hard to see that Sunrise has focused its anime production on robots. Anime like Cowboy Bebop, Accel World, Mobile Suit Gundam, Planetes, Kyoukaisenjou no Horizon, Kakumeiki Valvrave and of course Code Geass all belong to one genre, Mecha. But Sunrise is also known for InuYasha and currently the best rated anime on My Anime List: Gintama. 
The letters I and G stand for the two founders: Mitsuhisa Ishikawa and Takayuki Goto that founded Production I.G in 1987. The anime Tokyo Marble Chocolate won the Grand Prize in the Feature Film category at the 12th Seoul International Cartoon and Anime Festival held in Seoul, Republic of Korea. They are responsible for two of my favorite anime: Psycho Pass and Ao Haru Ride and many other popular series such as: Attack on Titat, Guilty Crown, Kimi no Todokoe, Higashi no Eden and Ghost in the Shell. 
Madhouse is a production studio that is a winner of two Japan Academy Prizes and two Tokyo Anime Awards for Animation of the Year. Madhouse was founded in the year 1972 and has produced a lot of great anime. The most popular madhouse piece is probably Death Note followed by One Punch Man and High School of the Dead. It also produced other anime such as: No Game No Life, Hunter x Hunter, Death Parade, Black Lagoon, Btoom!, Claymore etc. One thing that all Madhouse anime have in common is their amazing, if not flawless, animation.
This name is in my opinion the most popular one when it comes to production studios. Bones is known for its good animation and to be honest it is a good one, no doubt. It was founded in the same year I was born, 1998. Representing Bones anime: Fullmetal Alchemist, Fullmetal Alchemist: Brotherhood, Soul Eater, Noragami, Darker than Black, Zestsuen no Tempest, Gosick, Eureka Seven, Kekkai Sensen and Akagami no Shirayuki-hime. 
A-1 pictures is a subsidiary of Sony Music Entertainment that was founded in 2005. It is a really new production studio but it still produced some of the most popular anime ever. Among those is also one of my favorite anime Fairy Tail, but there are many more. Some of them are: Sword Art Online, Ao no Exorcist, Black Butler, Your Lie in April, Boku dake ga Inai Machi, Magi: The Labyrinth of Magic and Hai to Gensou no Grimgar. 
The number 2. in this ranking is a production studio that was founded in 1979. It won the Animage Grant Prix Award for Yu Yu Hakusho and Saiyuki. The name Pierrot actually means clown in Japanese and of course their logo is a clown-head. My two favorite anime ever Naruto (including Naruto Shippuden) and Akatsuki no Yona are produced by Pierrot and those are not the only ones. Popular anime such as Bleach, Tokyo Ghoul and Beelzebub are a Pierrot production and there are many more. Also produced by this anime studio are: Divine Gate, Yu Yu Hakusho, Tokyo Mew Mew, Kingdom etc.
Studio Ghibli is the most popular and probably most successful production studio in Japan and this is exactly why it deserves the first place. Eight out of fifteen of the highest grossing anime films in Japan are a Ghibli production. On the first place is Spirited Away, which also won the Academy Award for Best Animated Feature Film in 2003 (I think I'll watch it tonght). Moreover, another four movies have been nominated for the same category. The Ghibli Studio has tradition and is well known all over the world. It produces anime, mostly movies, since 1985 and here are some of them: Mononoke Hime, Howl no Ugoko Shiro, Tonari no Totoro, Majo no Takkyuubin, Mimo wo Subaseba, Gedo Senki... 
Konbanwa Minna-san,
Picture this, every time an accident is about to happen you get the chance to go a couple of minutes back in time to figure out what is wrong or what might cause the accident and eventually prevent it from happening. That is exactly the way Fujinuma Satoru uses his power he called "Revival", or better said the Revival happens on its own without Satoru's influence. One day, after Satoru is accused of murdering a person very close to him he is sent back in time, not for a couple of minutes but years. Eighteen to be exact. It is the year 1988 and Satoru is still in Middle School. Soon, he realizes that the murder might be connected to the abduction and killing of one of his classmates, Hinazuki Kayo. Given a second chance now, Satoru does every thing he can to save her. 
Well if this is not a great animation we have there. I mean that is something you always expect and get from an anime made in 2016. So no big talk about that. The style on the other hand varies from anime to anime and Erased had it's style done very well. Especially the characters look different and unique whereas the backgrounds and settings are also very interesting, like for instance their secret hideout, or the fake Christmas tree etc.
"But time never stops. It moves forward endlessly, as surely as bodies burried in the ground will one day become white bones. Listen, it's always you who stops time. If you stop in fear of future-you gain nothing and nothing begins. You spend your life as though already dead. Wheather you wish it or not- time never stops."
" Don't be too negative. You haven't become ashes just yet."
Yes, one more reason that this anime is truly amazing are the characters. When it comes to Lantis production all the anime have overly good characters. In Beautiful Bones (A synonym name for the anime) the diversity of characters is huge and they all contribute to the story in a unique but even way. Of course, Sakurako is the highlight of the story and so is her personality. The thing about her is that she behaves in a childish way but is actually a mastermind when it comes to solving cases and discovering secrets. And even tough her actions are funny most of the time, she also gets really emotional and mature from time to time too. Right after finishing the anime, I added her to my favorite character list on MAL. She is independent yet down to earth and emotional. I always loved this type of characters. And I actually never mentioned her huge passion for bones. She loves bones and has a lot of reconstructed animal skeletons at home. 
And here comes reason 5: the animation and the style of the anime are as amazing as the anime it self. The animation is basically an 'as expected' since the anime is a 2015 production. The style is important here. I can't really tell what it is that stands out so much. I think it's the bright colors and the way they do that 'now let's solve the mystery' scene. Whatever it is, the style makes the anime really unique and makes you not forget it so easy. In addition to that, it makes you enjoy the anime even more. As for me, animation and style are really important and they surely have influence on my anime choice. Right now, I have a really hard time watching Clannad because the style is just horrible. 
The anime doesn't actually have a proper plot nor an actual story line. It is just a mix of non-sense situations that are extremely funny to watch. They are just joking around, having conversations that don't make sense at all and do usual anime things that make you laugh. When I was to describe the anime in two words I would say: Hilarious non-sense because that's what Plastic Neesan is. In the end, I am still not sure how I should rate it on a scale from 1-10. The anime is horrible compared to others but it is still good in its own freaky way. I guess I'll give it a 7 or 6, I really don't know how to rate something like this. 
In such a world, scientists capture those gifted children and conduct experiments on them which are extremely painful for most of them. For that sake, the student council of Hoshinoumi Academy-a school for students with special abilities, with Nao as the president, tracks down adolescents with those abilities and invites them to enroll the school for their own safety. One day, Nao and her team encounter Yuu and persuades him to change schools and join the student council. 
The characters of this anime are definitely mainstream. You'll find characters like this in almost every slice-of-life and school anime. The tsundere type, the wannabe badass, the model/filstar/popstar/, the fanatic nerd etc. But of course the makers did put a little effort in the main female character. Nao reminds me of Shinoa from Owari no Seraph in a lot of ways, but despite that I really liked her. She is always so cheerful and cute you have to like her. Also, she is a really brave character and a good leader. In the end, who deosn't like tsundere? I mean, just look at her. 
Be honest now, isn't it easier to watch the anime than read the complete manga. Especially the action and the fights are better animated and in color. (True, ReLIFE manga is in color). 