There's a possibility Siwoo did that to make sure he does get expelled. IIRC, when his family's financial situation comes crashing apart, they still made sure/held onto Siwoo attending his current school (since it's a prestigious one). So logically, they wouldn't allow Siwoo to transfer somewhere else just because he wants to. He wants to force the school to expell him themself.
Like be fr, you can laugh about this "teenage angst" stuff, but it actually makes sense. Also funny, cuz it's as if you guys have never acted dramatic over anything, especially during puberty.
There's a possibility Siwoo did that to make sure he does get expelled. IIRC, when his family's financial situation comes crashing apart, they still made sure/held onto Siwoo attending his current school (since it's a prestigious one). So logically, they wouldn't allow Siwoo to transfer somewhere else just because he wants to. He wants to force the school to expell him themself.