Rookie boy group UP10TION validated this, during a year-end music festival from last year, where they were caught on camera bowing to their sunbae group INFINITE, in the middle of rehearsing! 

A fan-taken clip of UP10TION rehearsing "White Night" shows some of the group members hurrying to the side of the stage after their part finished, but on their way, they scurried over to where the other artists were watching, and bowed to INFINITE multiple times!

INFINITE, who bowed back politely at their hoobae group's manners, supposedly burst into laughter at UP10TION's adorable rookie mindset. (A Pink can also be seen laughing behind INFINITE in a photo taken at the event.)

Netizens commented, "INFINITE's reaction lolol. Seeing my INFINITE boys getting treated like sunbae makes me feel old... the kids who debuted when I was in middle school going around bowing to everyone now get bowed to!", "They're both so cute kekekeke", "If I were INFINITE, I'd find them super adorable too kekeke. They're in the middle of performing but they come over, bow, and then go back to dancing lolol", and more. 

Do you find UP10TION's manners endearing?