Though she can be a pushy sister (Yui), she gets along well with her brother (Shouta).

After discovering her other brother (Saemi) is running a piracy site where he uploads manga illegally, the tension between the siblings began to surmount.

Yui, being someone who draws illustrations and manga, resents him, but Saemi doesn't hide his lust for Yui as a woman.

Despite Shouta's troubled position between them, the guys start to do the worst thing imaginable...【Yui Hasegawa】
The heroine of this title. Loves her innocent brother Shouta. She's on the student council and very diligent in her daily duties, enjoying drawing illustrations and manga when she's at home. This makes what her other brother is doing that much more offensive for her.【Shouta Hasegawa】
This title's protagonist. Though his sister Yui may boss him around, he respects her. He also feels guilty about seeing her as a woman, and hides this from the others. However, what the other brother did this time brought his desire out more clearly, distressing him deeply.【Hasegawa Saemi】
Uploads things illegally on a daily basis, and doesn't even see anything wrong with it. The type to value desire and power over ethics and duty.