who is she?

a boxer, min jun had got into drama and got assassinated over false accusations, getting into a coma, a idol, chaewon, who dispised chaewon switches bodies with him but the only thing he remembers in min juns body is 𝙝𝙚𝙧 𝙛𝙖𝙘𝙚.
who will ruin who's life and will they find out who switched them? will they stay in their bodies?