Kei is sitting at a desk staring at the marriage certificate while Mizuho is showering. He seems reluctant to sign. Mizuho comes out of the shower and Kei is so surprised he accidentally presses the stamp down, therefore stamping his signature on it. Mizuho and Kei are now married.
In the principals office Kei and Mizuho are told that they should keep their marriage a secret. The Principal says he understands as he married a student. In the classroom Hyosuke and the others are talking about how strange Kei has been acting lately. On his way home Minoru tells him that he must live with Mizuho in case the principal comes to check on them.
When he gets home Mizuho is waiting from him in a wedding dress. Konoha says that since the paper work was so bland it would be a good idea if they have a little ceremony. Minoru gives Kei a ring to give Mizuho, he places it on her hand. They go to kiss when Kei hears Hyosuke called for him from outside. (There are many interrupted kisses in this series
Il es trop tard pour reculer, maintenant: Kei a signé les papiers et se retrouve maintenant officiellement marié à Mizuho, chez qui il emménage. Cette dernière est justement en train d'essayer la robe de mariée que la tante de Kei a confectionnée pour elle. C'est ce moment que Hyosuke et la bande choisissent pour rendre visite à leur professeur...
学校側の処罰を回避するため、婚姻届に判を押し、正式に夫婦となった桂とみずほ。桂は「こんな簡単に結婚していいのだろうか……」と悩みつつも、みずほとの新しい生活に期待を感じずにはいられないでいた。そんな中、みのる達のはからいで、略式ではあるが2人の結婚式を執り行なう事となった桂とみずほだったが……。