Boy group BTOB has topped the Japan Tower Record's Online album reservation chart.

BTOB, who will be releasing their Japan debut single, WOW, on November 12, has already topped the Japan Tower Record's album reservations chart as of October 19.

Also, all their single packages have taken over first, second and third place on the chart as well, making them a 'hallyu rookie'.

These rankings are a big deal for the group as they have not yet officially debuted in Japan yet. 

Next month, the group will be holding a press conference at the Sibuya CUTUP Studio and hold a small performance to the press.

Afterwards they plan to hold a single showcase and fan event and tour Japan for their promotions.

They will also be having a partnership with Tower Records, who will help their Japan debut promotions. They will be holding many different events at Tower Records from performances, photo events and more.

After hearing about the group's Japan debut, local fans have shown much support online.

Many are also curious to see how the group's skilled talent in performance, producing and more will help them for their Japan debut as well.

BTOB recently revealed that they had signed with Japan's KISS Entertainment to officially begin their debut in Japan. 

They have officially opened their Japan fan site, 'Melody Japan' and has been  updated with any recent news for concerts and singles.

BTOB has been known for their perfect choreography on stage and they hope to bring that to the Japan stage as well.

On the other hand, BTOB has been busy with their "You're So Fly" promotions. This is their first comeback in 8 months and features 6 songs with all different genres.

They will also be holding their 'Hello, Melody' concert in Korea from October 31-November 1.