https://www.doujinshi.org/book/398224/
https://www.suruga-ya.jp/product/detail/ZHOA21269

Ryou is an alternative name to artist Mirai Ozaki.

Quoting https://www.doujinshi.org/browse/author/84/Ozaki-Miray/:

"Romanized:Ozaki Miray
Original:尾崎未来
Katakana:オザキミライ

Info:This author uses a lot of names for herself and has many circles each which often have alternate or similar names.

NOTE: This explaination is incomplete.

She uses the name Ozaki Mirai (尾崎未来) in commercial works and her circle called Beat-Pop.

She uses the name RYO in her circle called Sailor Q2/ Panic Attack In Sailor Q2.

She uses the name Okuda Tamiko (奥田民子) in her circle called Chara Chara.

She uses REDRUM in her YOU AND ME MAKE LOVE series in the circle Perfect Crime.

Her circle called Sailor Q2, which appears on her Sailormoon parodies, sometimes appears under a similar name Panic Attack In Sailor Q2. I believe that she may use this for parodies other than Sailormoon.

Alt Names:
Inoue Youko
Okuda Tamiko
RYÖ
REDRUM
RYÖ+DEN
Ozaki Mirai

Member in:
BEAT-POP
Chara Chara
Kanzen Hanzai
Panic Attack In Sailor Q2
PERFECT CRIME
Sailor Q2
Tachinomi-ya"