Shujinkou is a story-driven, turn-based dungeon crawler that partially functions as a foreign language app, in this case Japanese. In this title, users control three characters, Shu, Jin, and Kou, each with their own unique abilities. The characters embark on a journey to stop Akuma, a powerful and very evil force that threatens the existence of the world. Along the way, participants face various difficulties that require a deep understanding of Far Eastern speech.