I'm honestly starting to think that this guy is akiropito.
Comparing what akiropito has hosted on his "BGM HP" and
Tomoya Tomita's works, it looks kinda convincing to me.
Also, Divine Bloodlines (which we now know is composed by akiropito) appears first in Akumajo Dracula X: Chi no Rondo for PCE, where they credit "akiropito". But in Castlevania: Dracula X for SNES (where Divine Bloodlines is also used), they don't credit "akiropito", but someone named "T.Tomita". Maybe not so convincing, but looking at the other credited composers, I'd say Tomoya Tomita comes closest (akiropito is also known as Tochiro).
I've also compared track 11 on "Pop'n TWINBEE GRAFFITI" with the "Twin bee medley" track that akiropito hosts on his page, and they sound pretty alike (I'm not so familiar with TwinBee music, so I could be wrong, though).
What do you guys think?