Lust Geass Vol. 3 (manga)

After Makoto's confession, Souta finds himself having to balance a delicate three-way relationship. Trying to keep both lust-crazed girls satisfied while also keeping his cheating a secret from Rikka is hard enough, but Zepar isn't through with him yet...as the next to fall victim to her curse is none other than their homeroom teacher, Tateaki-sensei! Faced with the domineering charms of a lonely adult woman, will Souta be sucked into yet another immoral affair?