Tokugawa-kun ga Komarasete kuru!

Overview

After breaking up with her boyfriend just before her wedding, Touko (29) escapes reality on a trip to Hawaii and meets Kaoru Tokugawa (22), a handsome man with excellent foreign language skills and experience in business management. They hit it off from the moment they meet, and for some reason, Kaoru asks her out with the intention of getting married. Touko is bewildered by his overwhelming enthusiasm, but Kaoru reveals an even more shocking truth...! A romantic comedy full of happiness about a younger man who loves her so much that it's hard to resist! (Source: Kodansha, translated)

Source: AniList