Here are some Twitter accounts you might be interested in:

Ryo (The Underneath): http://twitter.com/sonic_coll

Masato (The Underneath): http://twitter.com/masatoism

Taka (The Underneath): http://twitter.com/TAKA_415

ZERO (D’espairs Ray): http://twitter.com/despairsrayzero

G (The Fool): http://twitter.com/thefoolG

Girugamesh: http://twitter.com/real_girugamesh

Typherus: http://twitter.com/Typherus

GPK (GPKISM [his tweets are protected but send a request anyway]): http://twitter.com/GothicPrinceKen

DJ SiSeN: http://twitter.com/DJSiSeN

Takuya Angel: http://twitter.com/takuya_angel

Ryonai (Blam Honey/GPKISM): http://twitter.com/RYONAI_

Kiwamu/Starwave Records: http://twitter.com/starwaverecords

Versailles: http://twitter.com/Versailles_P_Q

Indivisual Live (Jrock updates): http://twitter.com/indivisual_live

Miyavi: http://twitter.com/MIYAVI_OFFICIAL

Tainted Reality (Online Jrock radio station): http://twitter.com/TaintedReality

VAMPS USA: http://twitter.com/VAMPS_USA

Jen (Echostream): http://twitter.com/jensrau

Tomo (Echostream): http://twitter.com/TomoAsaha

Dir en grey: http://twitter.com/Direngrey

Kiyoharu: http://twitter.com/kiyoharu1968