Irin's grandfather talked to Namcha about his relationship with Inn, but Namcha mistook Inn for Irin in the conversation. Inn and Jin were happy about the misunderstanding and decided not to clarify it, hoping that Grandpa would let Namcha and Inn get married. Irin cut Namcha off, but Namcha followed Irin and entered her apartment. It just so happened that Paeng and Namtan came to celebrate Irin’s birthday. (Source: Viu)