Roleplays are communities for writers to come together to write as a character (as idols/actors etc. or original characters) in a common setting. There are many different platforms where people roleplay at such as Facebook, Twitter, Mewe, Tumblr etc. There are roleplays where you portray as your chosen idol/actor etc which are nonau roleplays or use their face and change their job and personality for au ones. ^^

Well, for starters you'll have to choose a muse— preferably someone who doesn't or didn't say anything against being roleplayed (iu, christian yu) or anyone who isn't convicted of crimes. Roleplaying is basically acting as if the muse itself in a given setting (non-alternate universe theme/semi-alternative universe theme) or borrowing your muse's face but using it for novel-like roleplaying where you'll have to act a certain role that's way different from how your muse is in real life (alternative universe theme).