Kotegawa is my favorite character too, but I particularly like Momo as well. She's sly, seductive, and very aware of her sex appeal -- often using it to her full advantage. I also like how she turns sinister whenever someone threatens the person she loves.
She may be the youngest of the three Deviluke princesses, but she seems to be the most mature and level-headed one; the only one who actually comes across as "royal".
Base +34, Drcl97 -9, rezl_stag +3, angostamrun +12