Katsura Raido reincarnated in my hero academia world, but he dont know the original, Fortunately he have reincarnation benefit, his quirk, [masked] allows him to transform to any kamen rider he get from gacha, and [reincarnator bulletin board], It is a bulletin board forum that can be written by reincarnated peoples existing in various universe, created by strongest reincarnated being like [Kamen Rider Ohma Zi-O] [ultraman king] and [mazin emperor]. but when he tell rider only reincarnator forum about his quirk, he called Sh*tter and get kicked.

why?