Isn't it open too much? It's nice that my sister is wearing a braless zip hoodie, but she opens too much and makes her breasts look too bothered...and she leans unprotectedly forward.

It's fine that my sister is wearing a zip hoodie without a bra, but she opens too much and makes her breasts worry too much... What's more, when she leaps unprotectedly, her nipples are visible and she can't help but get a full erection while staring at me! I'm at my limit, so I put the zipper down when my sister is sleeping and, as expected, I thought she'd find out and get scolded, but the younger sister, who had actually noticed me having an erection, was secretly in heat and said, "I'm so concerned about it," and then she pulled down the zipper... Is this a provocation? When I realized it, my hands were on my chest...