Erotic Manga Big Sister!! – Naughty Days with My Hopeless Sister

Synopsis

The protagonist has lived alone with his step-sister since their parents went abroad for an extended work assignment. Despite wanting to focus on her own career, she’s been supporting him through school while living separately.

One day, everything changes when his school dorm suddenly evicts him due to unpaid fees. Desperate, he rushes to his sister’s apartment only to find her collapsed in her underwear. But she’s not dead—she’s in the throes of a severe creative slump.

“I can’t think of anything anymore…” she laments. Realizing his sister has sacrificed so much for him, the protagonist makes a decision. He’ll help her overcome this crisis.

“Don’t worry! I’ll help with ideas and whatever else you need!”

But his sister’s confession changes everything:

“Actually… I’ve been keeping this secret. I’ve been supporting you by drawing erotic manga.”

And so begins their passionate journey together—helping their sister create better erotic manga while indulging in their own steamy romance. A cute yet insatiable relationship between siblings begins…