in my opinion... both twice and bts didnt revive hallyu in japan. have not probably for twice. theyre just in their first year debuting in japan and already leave a big impact, but havent revive the wave.
their strenght is fandom. not because they debuted in japan though. they already have a quite big fandom there. their japanese songs are doing well because of their fans.
they deadly think holding the concert d+3 of ied.... plus ina and malay are holding twiceland too. usually indonesians n malaysians prefer to watch in sg but thereโre many muslims so ofc theyโll choose to watch twcland in their homeland lol