It's hard enough for idol groups to rank first on online music charts but BTOB's Sungjae has done it all by himself!

Sungjae's new OST "Love Song" for his drama 'School 2015' has ranked first place on five different real time music charts including�Mnet, Soribada, Genie, Olleh Music, and Monkey3.

With BTOB's comeback coming up, we hope this streak continue for the group's new release as well!

SEE ALSO: [PHOTOS] BTOB express enthusiasm about finally meeting fans through 'Our Dream' fan concert tour

Congratulations to Sungjae!�