Sparkle Encore

Tomoki works as a real estate agent in a small provincial town. He finds meaning in his otherwise dull daily life finds by supporting Sui, a member of the popular boy group RAYZ! He was actually once high school classmates with Sui — his first love. But six months ago, the group suddenly disbanded, and Sui vanished without a trace. Where could he be? What could he be doing? Tomoki was wondering, when Sui himself shows up looking for a place to live!? A former idol mysteriously returns to his hometown, to find a devoted fan and former classmate who still holds feelings for him.

(Source: Overlap, translated)