Ero Manga Onee-chan!! -Damedame na Ane to no Amaama Cosplay Ecchi na Hibi | エロ漫画お姉ちゃん!！～ダメダメな姉との甘々コスプレえっちな日々～

Ever since their parents went on a long-term overseas assignment, the protagonist has lived with his much older stepsister. His sister, wanting to focus on her work, supports him and pays for his boarding school while living alone. But one day…

“What?! The payment’s stopped??”

The protagonist is suddenly kicked out of his school dorm for non-payment. He goes to his sister’s apartment, only to find—

“Sh-she’s dead—?!”

His sister is found collapsed in her underwear. But she’s not dead.

“It’s no use… it’s all over…” “Sister…?”

His sister is actually a manga artist suffering from a severe slump. This caused her work to stagnate, leading to the stopped dorm payments.

“Ugh, little brother… I can’t think of anything…” “Sister… you went this far for me…”

The protagonist makes a decision. He must support his sister who has been working so hard for him. His outburst is born from this thought.

“It’s okay! I’ll help with anything, even brainstorming ideas!” “Really…? You said anything just now…?”

This statement changes the siblings' fate drastically. Because his sister is not just a manga artist.

“I’ve kept it a secret until now… but, about your father… I’ve been supporting us by drawing erotic manga…”

Thus, to save his pathetic and erotic older sister, and to create even better erotic manga, their innocent yet fervent sex life begins…!!