Monster Strike(4980)

Other Title(s)Monster Strike
Genre(s)Action, Fantasy, Game
SynopsisRen Homura returns to his former residence, yet he feels very uncomfortable: he possesses no memory of having lived there. Without warning or his permission, a game called 'Monster Strike' installs itself into Ren's smartphone; monsters of the game then literally fly out from his smartphone and start fighting on streets. Watching the fighting in amazement, Ren starts picking up his lost memories.

(Source: ANN)