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

Synopsis

Haruhiko, Riko, Yukari, Chisa, and Rinka team up to aid Kirino in saving her family's inn from going under, thanks to the stiff competition brought on by their new rival, Hotel Moonstone. Their solution is to craft exquisite, high-end cuisine to lure more guests to the Konosaka Inn. But while they're busy perfecting these dishes, Yukari, Chisa, and Rinka suddenly and inexplicably develop intense romantic feelings for Haruhiko, sparking a fierce three-way rivalry for his affection. For Haruhiko, this harem turns out to be equal parts paradise and nightmare.