Wooriga Saranghaeddeun Modeun Geot (All That We Loved) 1. Sezon 5. Bölüm (A Secret That Only You Didn't Know)

Subtle air flows between Yoo and Joon-hee due to their feelings for So-yeon. Meanwhile, Joon-hee becomes more confused about the changes happening to his body and mind. Later, Yoo discovers the secret So-yeon has been hiding.