Oshi ga Ani ni Narimashita
From Superfan to Stepsister·推しが兄になりました
The protagonist's mother announces her remarriage, and instead of a stepbrother, the protagonist ends up with a stepsister—Noa, a renowned model known for his cold demeanor. Despite his reputation, Noa is unexpectedly kind, performing tasks like waking the protagonist in the morning, assisting with schoolwork, and occasionally hugging them. The story explores the unusual dynamic between the two as they navigate their new family situation.