Tsukimori Yumeno

Third year in high school and Astronomy Club's president. Aimi's older sister. Yumeno has a cheerful and informal personality, thanks to which she boasts of great interpersonal skills, being able to get along with anyone. Although her appearance is very flashy, she is serious and speaks in polite manner. She also takes studies seriously and has good grades.

While she often has bold physical contact with both girls and boys, she doesn't cross a certain line and strictly guards herself from any sexual contact.

She is very good at cooking and in home, she is in charge of cooking (she makes Aimi's boxed lunches, too). On the other hand, she is bad at cleaning and before Aimi joined her, her room was a real mess.

Currently she has no particular dream for the future and feels vaguely insecure about it, but she makes sure not to show this part of her to others.