Konna no Unmei ja Nai kara Kanchigai shinaide: Shinkon-hen

Welcome to the start of a blissful and loving life as newlyweds! Yuuzen is now wife to Kouetsu and Ginga. Their infatuation with him is never-ending, and the trio live happily together... However, sometimes a heaping helping of love can turn the tiniest of misunderstandings into full-blown fights! A simple visit to the park has Yuuzen doubting Ginga's loyalty! Is it time to panic!?

(Source: Renta!)