Responses
They're not the same! Even though they're both Seons this one is Seon Minjae and the one from between encounter is Lee Seon!! Apparently he will get or already has his own story according to the final note from between encounter!! But they're connected!! Kim Jungpae is the slightly homophobe sunbae haha
I've reread between encounter so many times and didn't know the cousin there has his own story