Oh, that clickbait.
The game itself is just an another clone of Mobile Strike, with ripped characters (Without licensing) from animes like Re:Zero, and they use the same marketing way as Wartune (Aka. Clickbait my ass daddy) so they can get a sweet adrev from their useless game.
Afaik, that image is from a flash-based game, unsure if it was just boob touching or actual hentai.