Well, at least the author seems aware and willing to concede that Ayumu's behavior towards Tsubomi is pretty horrible.
I just feel so heart-broken.Ah-choo!I know of a pair of sisters...Oh?BzzzzzThat's pretty horrible...Seriously...?I'm just a replacement for her sister.was because I look like her sister...She said the reason she went out with me...Daidou-san.She gets so enthusiastic and happy when talking about her sister,Who are in love with each other.Who knows?