Strong Girl Bong-soon - Piano Kiss ep 16 박형식, 박보영을 번쩍(!) 둘만의 '피아노 키스♥' ㅁ 힘쎈여자 도봉순 15회 (Cô gái mạnh mẽ Do Bong Soo - Kiss trên piano) (หญิงแกร่งโดบงซุน - จูบเปียโน)