
Quick answer — Mari Eguchi worked on The Ossan Newbie Adventurer, Trained to Death by the Most Powerful Party, Became Invincible (Character Design), 9-nine- Ruler's Crown (Costume Design).
Mari Eguchi worked on The Ossan Newbie Adventurer, Trained to Death by the Most Powerful Party, Became Invincible (Character Design), 9-nine- Ruler's Crown (Costume Design).