女の子のキャラクターに女装させた弟を彼氏って事にして撮影したえっちな動画を、次のコス制作費にあてるため支援サイトに投稿し始めたコス姉。

Kos sister who started posting a naughty video taken with her younger brother dressed as a girl character as a boyfriend on a support site to cover the next costume production cost.