(For episode two, they get names. She is Kaoru, He is Hajime.)
Hajime's younger brother comes to visit. He's a cross dresser and dojinshi artist who has sold 30,000 volumes of BL manga starring Hajime.
Kaoru's friends come visit. Can Hajime behave normally? No. But mostly yes.
I think it's hard to have serious buildup on anything over 7 minutes of runtime.
Continuity lasting the entire episode appears!
Youta (Hajime's brother) has no (offline) friends outside of a manga club. When some of Hajime's friends have an offline meetup, he invites Youta along.