I like Sujin to be Sumin rather than sumin to be Seju coz I think Seju only needs Sumin for Sex while Sujin has so many chances of doing it with Sumin but she did'nt do you guys remember what chapter is it when Sumin ask Sujin to her house then Sumin got drunk she was setting a trap for Sujin the moment she hugged Sujin She thought it would make Sujin fall her trap but Sujin said something and hugged her too I think Sumin like her but Seju already knows that but Seju is also just playing with Sumin now not like those they were in they're in school days