Mobile RPG Chain Chronicle 3(チェインクロニクル 3)is going to have a crossover event with KonoSuba! 2(この素晴らしい世界に祝福を!2). Chain Chronicle 3 is owned by SEGA Games.
Chain Chronicle will have a series of crossover events coming soon, including the relaunching of the crossover events with Valkyria Chronicles(戦場のヴァルキュリア)and The Legend of Heroes: Sen no Kiseki II(英雄伝説 閃の軌跡Ⅱ).
Crossover Website:
Chain Chronicle 3 x KonoSuba! 2
Chain Chronicle Winter Festival website:
2017 Winterfest