Responses
Yes! Do we know his brother???
nope! he doesnt ever show up physically, whatever we know about his brother is all in the latest chapter!
https://www.mangago.zone/read-manga/i_seriously_can_t_believe_you/uu/ibx_chapter-5/pg-1/
this is his brother lol
Oh dear. This man may already have a story or two of his own to share
reread the whole thing bc of the recent update and yeah its still peak