Overlord: the Little Brother of a Supreme Being

In this we have Ainz little brother or I guess Suzuki Satoru meet his little brother Luka Satoru he was a very nice kid but at the age of ten he kinda went into a traumatized state he had it was due to him seeing his father and mother pass he's been living in the apartment with Suzuki when he was down for awhile he still had the mind of a child so he had to stay with his older brother ever since then he was down until he played Yggdrasil he was intrigued by it and sooner or later opened up then the guild came along then it was the last day and he was sad again he loved but then they were there in the game and he was happy find out what happens now