A couple of months later, Sungjae was overseas for filming. As he returned to his hotel room, he saw a message from Hyunsik, saying that he finished producing the title track "그리워하다 (Missing You)" for their upcoming comeback. Excitedly, Sungjae immediately pulled out his headphones and listened to it. He closed his eyes as he tried to absorb the soothing melody and carefully listened to the words. Somehow, halfway through the song, he felt his heart aching, as each and every word in the song tugged at his heart strings. His eyes grew watery near the end of the song, he was very close to crying, but managed to hold it in. He then called Hyunsik.

Sungjae: Hyung, the song, it's absolutely amazing, it's so good really, I could relate so well to it, it's a masterpiece... Thank you for making this song, I really needed it, and I think it will do really well, Melodies will love it as well

Hyunsik: What's with all the praising, are you drunk Sungjae-ah? 

Sungjae: No, but I'm drunk from this song... I can't stop listening to it!!

Hyunsik: Do you really like it that much? I'm glad then, really glad

Sungjae: Of course I love it hyung, it's too good, just too amazing, I almost cried listening to it...

Hyunsik: Thank you Sungjae-ah for loving the song this much, it means a lot to me

Sungjae: And thank you for this song hyung, it means a lot to me too...

Hyunsik: You alright...?

Sungjae: Can I be honest...? No, not really... I keep telling myself I'm fine, but listening to the song made me realize that I'm not fine at all, but somehow I feel better after listening to it, it's like the song helped me express the feelings I couldn't express by myself

Hyunsik: Really? I'm glad then, I'm really glad

Sungjae: Anyways I gotta get going hyung

Hyunsik: Okay, see you when you get back, fly safe!

Sungjae: Thanks hyung, bye

Hyunsik: Bye

Sungjae put the song on loop as he sat on the balcony and stared into the sky. 

Sungjae: My life, is incomplete... Sooyoung-ah, it's missing you... 그리워하다... (I miss you...) 

They spent the next month preparing for their comeback, recording songs, filming MV, album jacket photo shoot and more. After a months of hard work, they finally made their long anticipated comeback with their 2nd full length album "Brother Act". As soon as the album was released, the title track Missing You began climbing its way up onto the various music charts. 

That night, BTOB and their staff members all gathered at a barbecue shop to celebrate the album release and film Dingo's Tipsy Live, where artists get to perform their songs live after a few drinks. A staff member stood up and announced that Missing You was already topping charts, getting #1 on many music charts. Touched and happy for their success, the BTOB members celebrated getting No. 1 with a cake and another round of drinks.

Eunkwang: To BTOB and our future, cheers!!!

Everyone: Cheers!!!

With the sudden boost in atmosphere, BTOB started singing Missing You while Hyunsik accompanied on the guitar. Their beautiful voices filled the restaurant. They had a lot of fun singing the song as they did love shots while singing, and also improvised some amazing harmonies. The playful Sungjae , who was in a good mood, of course took the chance to be funny and sang while sticking a soju bottle cap on his eye. Hyper as always, Sungjae cheered loudly as if he was a Melody. At the highlight of