Kinkoi: Golden Time

Kinkoi: Golden Time is a Japanese-style visual novel produced by Saga Planets, a Japanese developer of romance VNs.
It is the official extra story to Kinkoi: Golden Loveriche.
The game won numerous awards in the year of its release in Japan for its art, music, characters, and story.

Welcome to Noble Private Academy, an institution that cultivates the wealthiest, most well-connected students in all of Japan! At this boarding school, one must be willing to accept all of its refined and dignified teachings or be met with strict opposition!

The hero of our story, Ichimatsu Ouro, transferred to this very academy three months prior through extenuating circumstances and he's now faced with a brand-new challenge: the holiday season! With New Year's right around the corner, he yearns to reach his peak, golden self.

Will that diverse golden shade live on forever?!