Ryukishi07 (竜騎士07), born November 19, 1973, is the pen name of a Japanese man originally from Chiba Prefecture who is well-known as the creator of the sound novel series Higurashi no Naku Koro ni and Umineko no Naku Koro ni. He is the representative member of the group 07th Expansion. His pen name originated from Reina of Final Fantasy V — "07" in Japanese can be pronounced as "reinana", and "Ryukishi" means "dragon knight", referring to Reina's wyvern. The character, Rena Ryuuguu, from his work, Higurashi no Naku Koro ni, comes from Reina of Final Fantasy V as well. His illustration style is recognizable from the large hands he draws on people.
- Higurashi no Naku Koro ni (screenplay and illustrations, Kodansha Box novels)
- Kaidan to Odorō, Soshite Anata wa Kaidan de Odoru (怪談と踊ろう、そしてあなたは階段で踊る), novel, serialized in Faust magazine.
- Higurashi Daybreak (screenplay)
- Umineko no Naku Koro ni
- Rewrite by Key (partial screenplay)
- Ōkami Kakushi by Konami (original plan/director)
- Higanbana no Saku Yoru ni
- Rose Guns Days (screenplay and partial illustrations)