Hanamuko-san

The Souda family tradition of marrying off its younger sons to male clan members leaves no generation untouched! Childhood friends Ritsu and Kouichirou may have taken their first, tentative steps into married life in Mr. Flower Bride, but now they have to wrangle with past loves, new misunderstandings…and each other (!!) to get to matrimonial bliss!

(Source: Yen Press)