High-energy, slapstick humor with a focus on "moe" (cute) character traits. To help me tailor a better story for you: Which character is your favorite? Should the setting stay in the dorm or go elsewhere?
Usually a "straight man" character who manages the girls' antics.
Ren stared at the kitchen counter, which was currently covered in a mysterious, shimmering purple slime. Beside it stood Gremory, a high-ranking demon princess who couldn’t seem to master the art of toast.
"I tried to infuse the bread with dark energy so it wouldn't get cold," she explained, her wings drooping sheepishly. "I think I over-channeled."
Ren rubbed his temples. Just then, the youngest, Elis, burst through the door. She was a "master of illusions" who currently had a spectral bucket stuck on her head because she’d forgotten the dispel incantation. "Ren! Help! The ghost-bucket is judging me!"
Each girl typically represents a different trope (the princess, the sleepy one, the energetic one).
The apartment was a disaster zone, and his grocery bill had tripled, but as the three powerful, clumsy demons settled in for a movie night, he realized he wouldn't trade the chaos for anything. Key Elements of the Series Romantic Comedy / Supernatural Harem.