(Solar: 25, Nayoung/Sowon: 21)

Sojung places her head on the table while looking straight up at Nayoung's concentrating face as the older twin tries to study, despite the distraction of the younger one.

"Unnieeee," Sojung whines, seeing that Nayoung has made no reaction to her act.

"What," Nayoung nonchalantly answers, "Are you sick or something? Calling me unnie?" she says without batting an eyelid.

Sojung gives up and sits up beside Nayoung while clicking her tongue. "Rude," she lets the comment slip off casually.

"Mwo?" Nayoung furrows her eyebrows. "Yahh, usually you just go like Kim Nayoung I need this-"

"Ya I really need something right now," Sojung doesn't bother but interrupts Nayoung. "So for once I tried to ask politely as a dongsaeng-" Sojung finds herself cut off by Nayoung's explosive laughter.

"Okay," Nayoung stops herself from laughing, "What does this need?"

"Yahh, Kim Nayoung-"

Just as Nayoung is about to click her tongue for Sojung's rudeness they hear their mother saying as she walks past their room, "Why can't you two communicate normally without any insults or condescending language," followed by a sigh and the shuffling of footsteps.

Nayoung and Sojung immediately burst out laughing, momentarily forgetting where they were.

"What are you two crazy idiots doing," they stop to see Yongsun standing at the door of their bedroom with furrowed eyebrows.

Sojung r