Quick answer — Ryuu Sakamoto worked on Kenichi: The Mightiest Disciple (Art Design), Arknights: PERISH IN FROST (Art Design), Casshern Sins (Art Design) and 10 more anime.
Ryuu Sakamoto worked on Kenichi: The Mightiest Disciple (Art Design), Arknights: PERISH IN FROST (Art Design), Casshern Sins (Art Design), Lord El-Melloi II’s Case Files {Rail Zeppelin} Grace note -Special Episode- (Art Design), Shigofumi (Art Design), Arknights: PRELUDE TO DAWN (Art Design), Armed Girl's Machiavellism (Art Design), Kemono Michi: Rise Up (Art Design) and 5 more.
