JRPG for mobile devices, with with a gacha system and light exploration.

A boy named Sei is playing a high-tech tabletop RPG when he and his friends are suddenly transported to another fantasy world. Remembering little else but his name, Sei joins with a Princess named Luna to find his friends and a way back to his own world, but finds himself thrown in the middle of a war against ruthless monsters called Dargon.