[Machine Translation] Saito and Akebono's newlywed life was also showing signs of gradual improvement. Just then, Maho, Akane's younger sister, appears, and the next storm is brewing! Akane is super excited to see her sister, whom she has not seen for a long time, and Saito is at the mercy of the free-spirited Maho. Then Maho makes an astonishing proposal to Akebono! Aune is surprised, but soon finds herself in the middle of a fight with her sister. Akebono is surprised and puzzled that she could not agree to the proposal right away, and she has to face her own feelings. On the other hand, Saito was also hesitating when Maho asked him to marry her. Maho's story triggers the two to begin to get closer to each other's true feelings, but a misunderstanding causes a crack in their relationship. But a misunderstanding causes a crack in their relationship.... But a misunderstanding causes a crack in their relationship.... This is the fourth volume of a romantic comedy about a couple of high school students who reexamine their feelings for each other.