Metalcore eh? this genre consist quite a lot of sub genres, from classic rock till Symphonic Death Metal
there's a lot of touhou circles who do this kind of genre
from the most well known one
Demetori, their music is indeed great. high paced BPM, strange time signature, long length music, what more can you expect? they indeed great and i cant deny that.
but aren't y'all tired listnin to the same music over n over? there's a lot of Touhou circles that do Metalcore.
for starter, i'll mention
AQUAELIE, the member is only one person and he's already well known in japanese music community, that is "xi". ye that guy who do awesome high paced musics for rhythm games and such. not to be confused with "xi-on" no that's a different person.
here's one of his music
https://www.youtube.com/watch?v=BrAO08gk4dQ (just 1:26 long ????)
next is
IRON ATTACK, they do great arranges. most of em is instrumental, but they also made quite a lot of male vocal arranges (they also have female vocal if you dont like mens ????).
example of their music
https://www.youtube.com/watch?v=L9uQ629xvdY i gotta admit this example opening is kinda dull, but wait till you hear the vocals then make your judge.
now... time for underrated ones
VAGUEDGE , Hull is the main member of the circle, he actually quite famous in heavy metal community. alongside with the guest member Rib:y(uhki) the member of famous circle ICDD (Imperial Circus Dead Decadence) and sometimes Hellnear as well. they make great musics together. i cant describe them with words, i'll just say that they are awesome.
one of their music
https://www.youtube.com/watch?v=ghyT17NbTRE
BarrageAmRing, a circle focused in Death Metal which consist many artist. most of them are well known in 2hu community such as
CROW'SCLAW, Yamagen, Liqu@, Meramipop, Foreground Eclipse.... *breathe* Thousand Leaves, BLANKFIELD, Rib:y(uhki), Hellnear, MuryokuP, ymtn, xi-on, 5105, Unlucky Morpheus, Ciel, and many more!
one of their music
https://www.youtube.com/watch?v=yKdMhHR4sSg
not enough? well... just look to the artists in the barrage am ring individually.
wew... wall o text again...