Mahiru Shiina

The heroine of the story. She is metaphorically called "Angel" due to her lovely appearance. She lives in the room next to Amane. She believes in repaying debts. She is a well-rounded girl who always ranks first in regular exams and excels in physical education classes. Her birthday is December 6th. Her name "Mahiru" is derived from her father's name "Asahi" and her mother's name "Sayo." Her father Asahi named her, meaning "since the parents are morning and night, the child is noon." Her nickname from Chitose is "Mahirun."

Born between parents lacking affection, she seems to be starved for love. She was treated coldly by her mother and was found by Amane swinging on a swing in the rain, which led to their interaction. In the "This Light Novel is Amazing!" female character category, she ranked 8th in the 2020 edition, 2nd in the 2021 edition, and has been ranked 1st for three consecutive years from the 2022 edition.