- Name: Reiji Sakurai (桜井零士)
- Also known as: Reiji Isakura (さくらい れいじ)
- Blood type: A
Reiji Sakurai (born January 26th, 1986) was for a while a frequently appearing vocalist in BEMANI, who made his first appearance in 2004 when he won the BEMANI 2004 Vocalist Audition, alongside Kanako Hoshino and the members of BeForU Next. He then made his first appearance in pop'n music 12 いろは with the song For Dear～. After that, he became fairly active in the pop'n music and GuitarFreaks & DrumMania series, appearing in both games for several years after. Originally he was credited for songs under his original name, but eventually changed it to RayZY, which stuck for the rest of his BEMANI tenure (with the exception of White Sketchbook).
Outside of BEMANI, Reiji is a composer, guitar player, lyricist, and vocalist. He used to be a part of a band called Gylay up until March 28th, 2009. Reiji left KONAMI in the late 2000's and is currently signed on with Japanese record company BIG TREE RECORD, who have provided jubeat plus and REFLEC BEAT plus with licensed songs. He's also worked on kors k's record label, QUADROID YUJI.
- Soon after he won the BEMANI 2004 Vocalist Audition, pictures of Reiji with a pierced face with a chain attached to it were taken. This was digitally removed from photos before they were sent out to the public because, according to the pop'n music staff members, they "didn't want his pierced face to scare children from playing the game".
- Gylay (member of)
- mu-Ray-ZY (with Seiya Murai)
|Desert rain||桜井零士||GuitarFreaks V2 & DrumMania V2||-||✓||-||✓||✓|
|Venus||Tatsh+RayZY||GuitarFreaks V3 & DrumMania V3||-||-||-||✓||✓|
|You ～Meaning All Orbit～||Gylay||GuitarFreaks V3 & DrumMania V3 CS||-||✓||✓||✓||✓|
|White Sketchbook||桜井零士||GuitarFreaks V5 & DrumMania V5 Rock to Infinity||-||✓||-||✓||✓|
|For Dear～||桜井零士||pop'n music 12 いろは||VIVID||-||-||✓||✓|
|Infinity Blue||桜井零士||pop'n music 13 カーニバル||EURASIA ROCK||✓||-||✓||✓|
|空へ続く道～Infinity∞MIX||桜井零士||pop'n music 13 カーニバル CS||ROCK STYLE||✓||-||✓||✓|
|NIGHT FEVER||桜井零士||pop'n music 14 FEVER!||RAY JAZZ||✓||-||✓||✓|
|Always||Shoichiro Hirata feat.RayZY||pop'n music 15 ADVENTURE||BOYS R&B||-||-||✓||✓|
|EFFECT||mu-Ray-ZY||pop'n music 16 PARTY♪||CHIP POP||-||-||✓||✓|
- For Dear... (2007)
- TIMELESS (2009)
- AWAKE (2009)
- スクランブルレイジ (2011)