vampire_T_T

Events in After Story take place immediately after the end of the first part, but extends into the next ten years, where Tomoya and Nagisa live together as a family. Life continues on for Tomoya.

It’s a new school year and Ryuuji Takasu discovers not only is he in the same class as his best friend, Yusaku Kitamura, but also Minori Kukshieda whom he's had an undisclosed crush on for quite some time. Ryuuji, the main character, runs into Aisaka Taiga who happens to live next door.

Taken from AniDB - Once, there was a group of close childhood friends. However, by the time they entered high school, they had grown apart from each other.

Tomoya is labelled as a delinquent at his school because he is constantly late and skips classes, but he seems to have little care about how others perceive of him. Everything in his life seemed dull and unchanging until one morning he meets Nagisa Furukawa on the road to his school; he finds her muttering to herself to give her more motivation for the school day.

Piano prodigy Arima Kosei dominated the competition and all child musicians knew his name. But after his mother, who was also his instructor, passed away, he had a mental breakdown while performing at a recital that resulted in him no longer being able to hear the sound of his piano even though his hearing was perfectly fine.

Angel Beats! takes place in an afterlife high school, which acts as limbo for teenagers who have died and experienced traumas or hardships during their lifetime.