Yoshimura Mamoru Dovey-Lovey Operation!

Emelenzia-san wants to break up Ayako-san and Mamoru-kun so her Onii-sama, brother, can have Ayako-san and she can have Mamoru-kun. So Emelenzia-san decides to help Mamoru-kun with Beatrice control but tries to seduce him while she is at it. While Emelenzia-san is trying to seduce him Ayako-san sees the person Mamoru-kun was supposed to be studying with so Ayako-san goes and looks for him, and Ayako-san sees Emelenzia-san and Mamoru-kun together. What is Ayako-san going to do?