Not Knowing Isn't an Excuse - S1.E26

Hwi Roo gets a publishing party to celebrate completing her book. She invites everyone including Suk Moo. Suk Moo realizes what he has done wrong to Hwi Roo. Meanwhile, Mr. Oh confesses that he has feelings for Hwi Roo in front of Hwi Roo and Suk Moo at the dinner after the publishing party.