Manga by author Koikoi

Mao, a 34 year old office worker, always dreamed of getting married, but her boyfriend of five years dumped her before she turned 30 and she's boyfriendless ever since. However, she's determined to get married by the age of 35. One day, Yuito, the 28 year old office ace and Mao's trainee in the same department, confesses his love to her. Mao, who had a faint liking for him but had given up because of the age difference, is elated, but... Yuito is a man who has no desire to get married! In today's world where options overflow, what choice will Mao and Yuito make?