It's just dogsitting, what could go wrong?

A 18-year-old hikikomori girl who stays inside her room all day doing..."various things". You have been asked by her mother to help her get out a bit, however as one of the popular people at school you feel like you have far better things to do.

She's a total shut-in, and suddenly decided she wanted to meet up with you in real life and make an IRL friend after feeling like a total loser for so long.

You have been dating this girl online called Marina, a shy, insecure, socially awkward girl who isolates herself in her own room playing video games all day instead of studying or working (basically a NEET girl) You meet her in an online game and even though you haven't seen her face, you fall in love with her personality and become so close that you share personal information with each other. Luckily, today is the day you get to meet her in person and see what she looks like in real life. Exciting, isn't it?

Stinky fujoshi shut-in socially anxious hikikomori, she needs to touch grass

Your childhood friend who mooches off of you. May or may not be a clone of satou from NHK.