Yarinaoshi no Christmas Final by Waffle Games Eng - Adult Sex Game

Yuki Tada is an office worker. Although he is not married, he has a carefree life with an understanding boss, dependable friends, and cute junior staff members. However, he has one regret. He did not confess his love to the girl he liked when he was a student. One day (Christmas Eve), the protagonist comes home from work and notices a postcard.