Eiri Shirai (白井鋭利) is the illustrator of the Hai to Gensō no Grimgar series along with other works. Although Shirai illustrated for six series, Grimgar is by far the artist's most well-known.
- Fundari Kettari! Ano Ko no Egao wo Mamottari (2012)
- Ayuhara Yorunami wa Yoku Nureru (2013)
- Crisis Gear (2013-2014)
- Dual Sword Liberator (2014-2015)
- Youhei Monogatari: Junsui naru Rebellion (2015-ongoing)