I enjoy the following bands: Mana Diagram, Eternal Melody, Unlucky Morpheus, Denkare, Foreground Eclipse, Ariabl'eyeS, ICDD, ELFENSJóN, Yousei Teikoku, Asriel, Release Hallucination, etc.
As far as I know, only Asriel and Yousei Teikoku might fit "goth", Asriel is labeled as a "gothic rock" band, and Yousei Teikoku mixes elements of gothic rock, metal, and darkwave.
If anyone could help me out not only so I don't incorrectly label the music I listen to as "goth" but I would also really love to explore this culture through Japanese music, I am Japanese as well.
My research was leading to me bands like Auto-Mod and Madame Edwarda, but I don't know if I'm on the right path. I have a thing for female vocals as well, so that could help with recommendations!