Uchi-deshi (Kanji: 内弟子 Hiragana: うちでし lit. "inside student") is a Japanese term for a live-in student who trains under and assists a sensei on a full-time basis. The system exists in many societies, including those of kabuki, rakugo, shogi, igo, aikido, sumo, karate and other modern Japanese martial arts. In modern times, the role is also referred to as tsukibito (Kanji: 付き人 Hiragana: つきびと).