Monster Strike the Animation is a oNA (web) anime that premiered in fall 2015, produced by Studio Hibari.

About the production: the story comes from a video game, there are 51 episodes of about 11 minutes and its current status is "finished".

Its main genres are action, comedy, fantasy and sci-fi, with themes such as Male Protagonist, Meta, Video Games and Ensemble Cast.

On AniList, Monster Strike the Animation has an average score of 59%, an average score, and appears on 6,621 users' lists.

The franchise continues in or follows from: MONSTER STRIKE THE MOVIE: Hajimari no Basho e, Monster Strike: Zoku Saishuu-wa Pandora no Hako and Monster Strike: Rain of Memories.

The protagonist, Ren Homura, returns to the town of Kaminohara, where he once lived. But did he really live in this place before? A nagging feeling tugs at his memories. Meanwhile, a strange game is forcefully installed onto his smartphone - a game called Monster Strike. A gauntlet of battles await him. Through the fierce fighting, he pieces together his scattered memories while uncovering the truth of the game. He's supported by his companions: Aoi Mizusawa, Akira Kagetsuki, and Minami Wakaba. Together they take a step into the unknown, unsuspecting of the secrets hidden below the surface... (Source: Crunchyroll)

Official synopsis from AniList.