Responses
it's the same headband the main chara was wearing in chapter 1 :D
http://www.mangago.zone/read-manga/k_s_secret/uu/k_s_secret-chapter-1/4/
Omg, you're right~!! I forgot about it, lol. :P
Did I get it wrong or was his friend Jooyoung wearing an Elmo sweatband on his head?
And also... the demonstration he did with his fingers, XD.