woww this is so cool. I think Chaerin gets to see other people's appearances if they have some sort of meaning/impact in her life. At first it was only Jeha because he was the only one who had meaning since he was the ml she wanted to get with but over many turns he lost that meaning so he became a shadow. Then she started to see the mystery girl from last chapter because she saved her life and they became comrades for a short time, and now its this girl. im kind of excited to see Chaerin's future interactions with the classmates now ʕ •ᴥ•ʔ