I should have died in a fire, but when I realized I was in a white room. And for some reason, he was reincarnated as a mysterious creature of a sphere. ……What? what is that? I don’t think that is the case. Other spherical creatures are attacking. What should I do, what should I do? This is a story of a boy who is “unhappy” and wants to be “happy”. With the power of the unique skill [Smoke Ruler] and the race [Ryujin], the aim is the strongest! Come up in this different world! -Because I will be happy this time!