Soshiki no Shukuteki to Kekkon Shitara Mecha Amai

Roushi and Ritsuka once belonged to opposing organizations of people with supernatural powers, and their relationship was one of mutual hatred. After repeated bloody battles, the two are now a loving couple who tell each other "I love you" and never miss a kiss before going out. Roushi is enjoying his happy married life, but is troubled by the fact...