Mysterious person in the classmate record

I apologize for any slow loading or inability to load the illustration images in the game. TAT...If you are interested in viewing the illustrations from the game, I have recorded a gameplay video which you can access via the following link:https://www.bilibili.com/video/BV1vhp6eWE5P/?spm_id_from=333.1387.list.card_archive.click&vd_source=f23ab3fc5d52ee04bb02b3ca062f77da