[Machine Translation] ( Let's get married, Airisa. I will definitely make you happy ) Yugen Takasegawa and Airisa Yukishiro changed their relationship from fake to real engagement. They have deepened their relationship even more than before, and they spend many sweet moments practicing kissing on a cherry blossom viewing date and going on a pool date to shorten the distance between them. However, when Airisa sees the difference in their family backgrounds and values, she begins to worry that she is not a suitable fiancee for Yusegawa. A few days later, Yugen's grandfather, who is concerned about their relationship, gives her a three-day, two-night trip to a hot spring, and they decide to go together... This is the fourth act of an impetuous and sweet love story that is sure to make you grin.