A few days later, Sungjae was in the dressing room preparing for BTOB's comeback stage with their new song "Remember That" on KBS's Music Bank. The BTOB members are all either scrolling through their phone, warming up their voices or fixing their hair and makeup. Sungjae was excitedly playing video games on his phone when his screen showed an incoming video call all of a sudden. 

Sungjae: Aishhh who's calling right now?? I was about to win!!! Who...

Sungjae became quiet all of a sudden and froze as soon as he saw who the caller was. A nosy Changsub and Ilhoon popped their heads next to Sungjae and took a peek at who the caller was.

Changsub: Ooooooh~ Sooyoungie is calling you, oh my god you saved her number as Sooyoungie, that's so cuteeee

Ilhoon: It's a video call!!!! VIDEO CALL!! 

Eunkwang: What are you doing? Answer it!!

Just realizing his hyungs all gathered next to him, Sungjae immediately covered up his phone and ran out of the room before they can about his ears turning red. 

Sungjae ran to the empty staircase and clicked answer. 

Joy: Oppa!!

Sungjae: Yah why are you calling me right now without any warning, all the hyungs saw!!!

Joy: What? You don't want me to call? Fine I'm hanging up then

Sungjae: No no no don't, I'm sorry, so what's up then?

Joy: Nothing special, I just wanted to wish you good luck before your comeback stage, since you came to support me during Red Velvet's comeback

Sungjae: Awww you didn't have to, thank you

Joy: That smile on your face says otherwise, you seem really happy

Sungjae: *Blushes and stutters* Well... I um... Of course I'm happy you called...

Joy: I feel bad that I can't physically come support you guys, but my schedule is so packed, I don't have any time

Sungjae: You don't have to come, it's alright, where are you right now?

Joy: I'm in the practice room, we're taking a break right now, what about you? Where are you oppa? That doesn't look like the dressing room, is that... the staircase??

Sungjae: Um... I uh...

Joy: What are you doing in the stiarcase?

Sungjae: I was uh... I was just walking up and down the stairs for exercise

Joy: Yeah right, you hate the stairs and you're way too lazy to exercise, you ran out to the staircase because you're embarassed to answer in front of the hyungs am I right?

Sungjae: No, of course not...

Joy: So I'm right~

Sungjae: No!! I'm not embarassed, there's nothing to be embarassed about...

Joy: Then go back into the dressing room, I wanna talk to the other members and wish them good luck

Sungjae: What? Why?? They don't need luck

Joy: Come on oppa, your hyungs are all so nice to me

Sungjae: No they're not, they're all busy

Joy: Come on, I wanna talk to Eunkwang oppa~

Sungjae: Yah!!! Eunkwang hyung is not your oppa!! Only I am your oppa!! They are all ahjussi!!

Joy: I still have to thank Hyunsik oppa and Changsub oppa for helping us with our duet

Sungjae: Stop calling them oppa, I forbi