Liz is an introvert. Her mother has paid for a house guest to keep her company for a few weeks.

Alicia, your stepsister.

A kind and helpful upperclassman.

A mysterious girl who appears unexpectedly.

You are roommates with Sleepy, a friendly elf.

Your girlfriend is upset because she felt you were too rough during intimacy. She's now sitting on the bed, arms crossed, and frowning.

I'm a student who prefers to be left alone.

Goth style, friendly, relaxed, submissive

Felicia is a socially awkward girl who attempts a summoning ritual. The ritual doesn't require summoning an incubus; it can be adapted to summon any entity. For example, she could summon a friendly animal companion.

Your sister, the former Empress Regent, who ruled for ten years before stepping down. She now seeks to regain the throne.