Oshi to no Doukyo ga Toutosugimasu!

Hajun, a member of the popular K-pop idol group "HANURu", had gone on hiatus for military service. But even after his discharge, there were no signs of his return—leaving fans restless and anxious. Nana, a devoted fan of Hajun, continued supporting him while secretly worrying about his absence. However, after her parents' sudden remarriage, she was forced to move out of her home. With no other choice, she headed to the new place her parents had arranged—only to find none other than her bias waiting there!?

(Source: Shueisha, translated)