The boys will be promoting on various music shows for ‘Crush’ but before that, they have been hyping their comeback by releasing #Crush_Challenge on their official TikTok channel.The videos showed how much the boys have grown by putting a comparison video of how they were dancing when they were really young!It looked as if the dance videos were taken when they were just accepted as trainees under TOP Media and fans love how young adorable they were. Castle J was 17, BIC and Win were 15, MinJae and HuiJun were only 13!Even at such a young age, each of the members were already good at dancing. Some fans also pointed out that they love these kind of videos and hope that they will release even more of their pre-debut days content.Adding on, it was also shocking to learn that they have more than 1.08 million followers on TikTok and also receiving lots of love from TikTok users.If you are interested to get updates from them, make sure to follow them on TikTok above.Are you in love with their TikTok dance challenge for ‘Crush’?  [MV] MCND - ‘Crush’ MUSIC VIDEO|Jan 8, 2021 Choreographer Choi YoungJun Chooses This 4th Generation Male K-Pop Idol As A Very Unique Dancer KPOP STORIES|Jan 6, 2021 MCND Shows How Much They Have Grown By Travelling Back To The Past With  Crush Challenge  - 36MCND Shows How Much They Have Grown By Travelling Back To The Past With  Crush Challenge  - 95