The protagonist 's design was cited by Soejima as his most challenging recent work .
Due to being high school students , Soejima found it difficult to make each main character 's uniform design distinctive , instead expressing their individuality through their thief costumes .
The protagonist 's design was cited by Soejima as Soejima 's most challenging recent work .
Due to being high school students , Soejima found it difficult to make each main character 's uniform design distinctive , instead expressing their individuality through their thief costumes .