"If you two continue doing that I wouldn't be surprise if someone actually falls in love." [ discontinued ] astro fanfiction narrative - english started: 092819

Your mother passed away 3 days ago. A month before she passed on, she gave you an envelope with documents inside. "Only open it when I'm no longer here. Promise me." she said. A short note was tapped to the envelope. It said, 'I'm sorry for leaving you. Please find him.'You opened the envelope and the words in bold captured your attention, Yoon Sanha. Who is he?