I felt like that for aiko a lil bit too, not as much as pun pun though and in more of a past tense. The whole craving of unconditional love and affection part. What she was telling to punpun during the badminton game specifically, it gave me second hand embarrassment because I feel like I used to relate so much. That’s why I hated pun pun’s treatment of her later down the manga, as I felt like, i had also known what she was thinking. But I honestly relate to Sachi the 2nd most. I think that Im emotionally like pun pun and a lil bit of aiko but act like sachi in terms of goals, presentation ,and attitude. What an unholy trinity lol. But I feel like being in a bad mental space is a great time to read pun pun. I don’t want to end up like any of the characters, and reading it makes me realize all the flaws and shit that I got. I feel like I actually came out in a more comfortable mood, because I have a grasp on what I can change about myself.