Gift: Eternal Rainbow - Ki no Saka Ryokan Kiki Ippatsu!!

Synopsis

A group of friends rallies to rescue a family inn from financial ruin. Their plan to attract patrons with gourmet meals takes an unexpected turn when three of them develop intense romantic feelings for their male companion. This sudden development sparks a fierce rivalry, turning their efforts to save the inn into a chaotic and challenging romantic entanglement for the man at the center of their affections.