Maigo ni Natteita Youjo wo Tasuketara, Otonari ni Sumu Bishoujo Ryuugakusei ga Ie ni Asobi ni Kuru You ni Natta Ken Nitsuite

One day, Charlotte Bennett transferred to Aoyagi Akihito's class. Her proper and refined mannerisms and adorable appearance captured the hearts of his classmates, but Akihito calmly takes a step back, feeling that she "lives in a different world." However, helping Charlotte's lost sister, Ema, throws his daily life into upheaval...?!...