Saimin Appli de Netori Hame ~Kore made no Urami, Yari Kaeshite Yaru!~

Misawa Kouta Is a very unfortunate boy, being bullied by his classmates.
The only classmate who talks to him is a girl by the name of Shibasaki Ayaka.
However, Ayaka has a boyfriend, Sekishima Kaoru, one of Kouta's bullies.
One night, while playing an online videogame and wondering how he could take revenge, he finds out about the existence of a Hypnosis app.
"This Hypnosis app is amazing" - Kouta witness firsthand the power of the app.

[From Monolith]