"Blue breath", "Wo-ki-ki-boku", "Haruko Ameyomi" ... Before being ashamed of the four-character idioms you don't know! Learn four-character idioms with puzzles! ☆ The rules are simple! Find the four-character idiom from the kanji block and trace it to erase it! Clear the game by erasing all four-character idioms! Knowledge of four-letter idioms and inspiration are the keys to the game! ☆ Brain training in a short time! Exhilarating kanji puzzle with big letters! Anyone, from elementary school