to the brother's best friend anon, here are some fun ones!
https://archiveofourown.org/works/47269129 the one for me by ohhennyhenny
https://archiveofourown.org/works/51854740 rocket boy & earth man by mrehk
https://archiveofourown.org/works/49602814 do u like it by bowlcuthanz
and https://archiveofourown.org/works/44611477 in this one ji is in love with his best friend (immie)'s brother min but its still worth reading too!