I Want to Be the Only One for You, Whether Awake or Asleep

A self-proclaimed busybody and high school girl, Azusa, loves to be helpful. When her mother goes abroad, she ends up living in an acquaintance's house. However, the person already living there is her classmate, the perfect and handsome "Prince" of the school, Makoto Orihara! Tired of the attention from girls at school, Makoto is extremely cold and unapproachable to her. However, as Azusa continues to take care of him with no ulterior motives, he gradually opens up his heart. During their time alone together after school, he starts to show her a side of him she never expected— suddenly revealing a sweet expression only for her. (Art Lapsa)

https://www.cmoa.jp/title/320942/