Chad move Eiyuu doing here. She always enters his room through his window, so he's allowed to enter hers too. Besides his intentions are pure unlike hers.
Wow, I remember having read this years ago, and now that we're in this pandemic I decided to reread the manga and damn... freaking nostalgia hit me hard, and even more after noticing that all the scanlators literally disappeared, including Red Hawk Scans, which was one of the best groups back...