Itsuki had been in love with Mao, and Mao knows. Even though she doesn't see Itsuki as a lover, she still wants to monopolize her. Like someone who only has one friend and finding out that she might go away in the near future. So she tries all sorts of stunts to get Itsuki to confess, coz by making her confess Mao is tying Itsuki to herself. (Tho tbh I think Mao is in love with Itsuki, but in a non-sexual way or something)
But in the last chapter it is revealed that Itsuki actually knew that Mao knows about her feelings for her. She was trying to move on from Mao, but after Mao's attempt of monopolizing Itsuki she decided to try tying Mao down to her.
TL;DR Mao: You're mine (as a friend)! Even though I'm in love with you! Confess! Itsuki: I'll make you mine! Cockteasing me like that!
So, basically...
Itsuki had been in love with Mao, and Mao knows. Even though she doesn't see Itsuki as a lover, she still wants to monopolize her. Like someone who only has one friend and finding out that she might go away in the near future. So she tries all sorts of stunts to get Itsuki to confess, coz by making her confess Mao is tying Itsuki to herself. (Tho tbh I think Mao is in love with Itsuki, but in a non-sexual way or something)
But in the last chapter it is revealed that Itsuki actually knew that Mao knows about her feelings for her. She was trying to move on from Mao, but after Mao's attempt of monopolizing Itsuki she decided to try tying Mao down to her.
TL;DR
Mao: You're mine (as a friend)! Even though I'm in love with you! Confess!
Itsuki: I'll make you mine! Cockteasing me like that!