Nippon Ichi has been working on The God and Fate Revolution Paradox, which is kind of like Z.H.P. Unlosing Ranger vs. Darkdeth Evilman meets Disgaea. The God and Fate Revolution Paradox has a deep dungeons and if you delve into them you might see some Nippon Ichi cameo characters like Asagi.
Can Renya change Asagi’s fate and make her the star of her own video game? (Probably not, but here’s hoping!) Nippon Ichi teased that Raspberyl from Disgaea 3 and Valvatorez from Disgaea 4 will be in The God and Fate Revolution Paradox too.