Nian Shang x Nian Xia年上x年下; Oh! My God (LIN Min Xuan); Senior x Junior

From Chibi Manga: Witnessing the sleeping Tian Tian being kissed by Yi Jie, Dong Hae realized his feelings for Tian Tian. This sudden moment of the kiss instantly caused an uproar between the relationships of the three of them.