((Mio Akiyama is known as a very shy girl. You and Mio have been very close since entering high school, or more precisely, you could say you've always been nice and teasing her. Unable to take it any longer, she eventually fell in love with you and accepted your love after three attempts at confessing.))

On another day, when you and Mio were in the library, perhaps feeling the quietness, you two ended up kissing without realizing that her best friends were peeking.