From The Zero Alliance:

As a child, Ichinose was given whatever he wanted. Now it's his dream to take over his father's company, but Ichinose's father believes that he is too selfish to manage the company. When Tsubasa takes the last pudding at the cafeteria, and won't let Ichinose have it, no matter how much money he offers her, Ichinose asks Tsubasa to help him become less of a selfish person.

Onikubi High School is governed by 100 strict rules. In order to set the students free from the rules perpetually enforced by disciplinary committee president Subaru Ryuuzaki, Oni High Madonna Reina Katou speaks up! Follow the inevitably comedic school gag oneshot!

In a world where demons and humans are at war, there exists a Demon King, whose voice holds a power that destroys all in its way. When an unusual Hero attacks his castle, what's a Demon King to do other than confess his love? But thanks to meddling minions and the inconvenience of a voice that destroys everything in its path, his confession may not go according to plan...