Excuse Me, You Just Have Said "Retired"?!

Reina is a 39-year-old single mother with a son in his second year of high school. She doesn't want to date because it's embarrassing for a "mom" in her 40s. She leaves work at the regular time and doesn't aspire to promotion, sticking to being a "mother." She categorizes herself in many ways and puts "looking good in the eyes of society" first. With her child-rearing settled down, she feels like she is living out the "remainder of her life." Then, Reina finds out that her grandmother, who is nearly 80, is in a relationship, and she makes a decision. After that, she is reunited with the person she admires! And a new employee confesses his love! Will her staid life start to move forward? (Source: Be Love, translated)