Who Sung the Themes?
This band formed in 2007 was made mainly to perform theme songs for Kara no Kyoukai but now also has songs in shows like Fate and Arslan Senki
Kalafina
Kiss x Sis
Goddess of water
Aqua
Biology
Cells at Work!
Reincarnated as a Slime
4 (Season 1-3, Slime Diaries)
This duo composed of a composter who has written many hit songs and a singer who has worked on many songs in the online space (vocaloid) has made a big name for themselves in anime, performing songs for Kill la Kill and Mahouka.
GARNIDELIA
This show is about a boy who has the ability to sense the feelings of others, but can't say no when asked. One day he ran away from home and gets invited to an amusement park where he meets a group of people who play a card game.
Cardfight!! Vanguard overDress
Ai Hayasaka
Man goes back in time, now a little boy.
Erased
Madoka
4 (Puella Madoka Magica, Rebellion, Magia Record + S2)
This rock-band trio, with a very striking name, had made waves with their early electropop style before transitioning into rock, with socks featured in Run With the Wind and Yozakura Quartet
Unison Square Garden
This show follows a high schooler who time travels to the Sengoku period, where all of the Samurai lords are cute girls.
The Ambition of Oda Nobuna
The youngest and strongest of her race, she loves knowledge and traveled away from her homeland to win a Library. The main characters of her show eventually beat her, and made her their servant.
Jibril
Girl invents books.
Ascendance of a Bookworm
Working/Wagnaria
5 (Working season 1-3 + special, WWW.Working)
DAILY DOUBLE: This indie duo pop band has gone through many vocalist changes with their most recent change giving them their most iconic sound. Their songs can be found in Owari no Seraph Season 2 and Boarding School Juliet.
fripSide
This was made as an April Fools joke and follows the little sister of the main character, but, with a twist.
School Days: Magical Heart Kokoro-chan
This character is the maid of her school, and always wears her maid uniform. The students told her to wear it as a joke, but she took it seriously. She only knows 3 words of action, "receive," "Confirm," "execute," Her favorite animal is the shark.
Sachi Komine
High schoolers in jail.
Sword Art Online
7 ( Sao 1+2, Ordinal Scale, Alicization + War of Underworld and Part 2, GGO
This pop rock band centered around two main members and multiple vocalists has a name that represents the past and future. Some of their songs are found in Bubuki Buranki and Youjo Senki(Tanya)
Myth & Roid
This show revolves around an aristocratic family's descendent with RARE intellect. One day his uncle went under, and he went back home to look for anyway to help him, but what he ends up doing is summons a devil.
Makai Ouji: Devils and Realist.
This character is a hired assassin, who was originally introduced as a guy, but of course after the main character treats her nicely she joins his harem. Her code name is Black Tiger.
Seishirou Tsugumi
Man is reborn as a little girl in a different world.
Saga of Tanya the Evil
Love Live
8 (Love live + season 2 + movie, Sunshine + s2 + movie, Nijigasaki, Superstar)