Tonikaku Kawaii Vol. 5

Nasa Yuzaki is a boy who grew up being ridiculed for his unusual name (he was named after the space agency NASA). Smart and studious, he has aced his mock high school entrance exams, ranking first in the nation, and is set to go to the high school of his choice. However, his world flips upside down after he meets a beautiful girl named Tsukasa Tsukuyomi and instantly falls in love with her. Infatuated by her beauty, he finds himself in a daze and ends up getting hit by a truck. After she comes to his aid and rescues him, he confesses his love for her and asks her to be his girlfriend, and she accepts on the condition that they get married. However, once Nasa awakes from his injuries, she is nowhere to be found. Now with a new goal for his life and a newfound ambition, he dedicates himself to finding this girl that captured his heart and starting a life with her.
In Vol. 5, Nasa and Tsukasa decide to stay with the Arisagawa family at their public bathhouse until they find a place of their own. With the addition of the Arisagawas and Chitose, things are getting more and more lively for the newlyweds!
Notice: This manga is written in Japanese.