I understand Muhan is the original owner of said body but I'm with Jaheon on this one. Imagine if you will that you are friends with someone who has D.I.D (exactly what Muhan has) Each personality is a different person to you despite sharin the same body, you consider them all different people. so you have 3 different people that you talk to and hang out with and just enjoy spending time with. Now how would you feel if your friends disappeared and someone with all 3 of their personality showed up as a replacement of sorts and you risk never seeing the 3 people you made a connection with again. It's nothing against Muhan and though all 3 Mugos are Muhan, Muhan can't be all 3 Mugos. Muhan can only be Muhan and that's not who we fell in love with, that not who we have memories with, that not who we formed a connection with. Even if this was bound to happen (D.I.D can be cured and personalities can "fade" or "merge" I guess though I'm not an expert and actually am not sure how commonly this happens since Trauma isn't something easily soothed) the sudden return of the original was too sudden giving Jaheon no time to cope or come to terms with it, no chance to say goodbye to individuals. His behavior is perfectly normal and honestly same.
I understand Muhan is the original owner of said body but I'm with Jaheon on this one. Imagine if you will that you are friends with someone who has D.I.D (exactly what Muhan has) Each personality is a different person to you despite sharin the same body, you consider them all different people. so you have 3 different people that you talk to and hang out with and just enjoy spending time with. Now how would you feel if your friends disappeared and someone with all 3 of their personality showed up as a replacement of sorts and you risk never seeing the 3 people you made a connection with again. It's nothing against Muhan and though all 3 Mugos are Muhan, Muhan can't be all 3 Mugos. Muhan can only be Muhan and that's not who we fell in love with, that not who we have memories with, that not who we formed a connection with. Even if this was bound to happen (D.I.D can be cured and personalities can "fade" or "merge" I guess though I'm not an expert and actually am not sure how commonly this happens since Trauma isn't something easily soothed) the sudden return of the original was too sudden giving Jaheon no time to cope or come to terms with it, no chance to say goodbye to individuals. His behavior is perfectly normal and honestly same.