BTS's V is known to be the most popular idol in Japan. 

Today, his Japanese fanbase organized a project for him, "Clothes for trees," wherein Japanese fans have dressed up trees in colorful clothes related to or reassembling to Taehyung or TATA. 

Taehyung has the biggest impact in Japan, as we know that he's the only solo Korean idol to reach #1 on Japan iTunes with Sweet Night, and his song is still charting till now, reflecting his power. 

A book that Taehyung shared as his favorite in an interview has become the #1 best seller on Amazon Japan three days after it was published in Japan, showing his brand power. 

Taehyung is known for his biggest fanbases; his fans don't hold back in supporting him. 

And it's even meaningful when their support gets noticed by the idol himself. 

Like recently, the support project from his Chinese fanbase Vbar and Korean fansite Nuna V got noticed in the show "You Quiz."