he doesn't have the same name as he does here, but he's not japanese but learnt it because he was in japan for 4 years or something
please i think he's lying
UPDATE 1[]
he's claimed to been working on a sequel and asked if uboa should be in the game
https://cdn.discordapp.com/attachments/172035064325079040/176004390388236289/Unbenannt.png
"Your Character did something horrible The Worlds will be based around guilt Hatred Anger(edited) Fear And Depression And Confusion The Character will be called "Sakutsuki" Sakuru means Circle"
UPDATE 2[]
i know he's probably lying but he apparently found this
https://cdn.discordapp.com/attachments/172035064325079040/183309313257766917/unknown.png
this is the game
https://cdn.discordapp.com/attachments/172035064325079040/183362901430501387/unknown.png