Taisetsu na Hi wa Itsumo Ame

Kyoko always thought she would end up getting married to her long-term boyfriend Kenichi. However, reality hits her like a ton of bricks when he decides to end their relationship and move to Kyushu without her. At the age of 24, she starts a new life in Tokyo, where she crosses paths with Yoichi at her workplace. His warmth tugs at her heart, and despite their 17-year age gap, she falls in love with him. However, fate has other plans, and when two other men shake up her love life, she must make the biggest decision of her life.

(Source: Webtoon Entertainment)