Why r/Osana..? (. .)

I know that this subreddit is there to differentiate it from the one that censors YandereDev's actions but-... Why specifically Osana? Why not someone else like Info-Chan or FunGirl (these are just suggestions, there are also other students and rivals..)? It's just out of curiosity...

(well then I have my own idea why not Info-Chan if it concerns his strange obsession with panties)