Search gender: all male female リチュウ Japanese Boy Names Variations. 1 names found. gender: all male female Name: richu Katakana: リチュウ 0 Kanji: 利忠 Meaning: 利Sharp. Smart. Wise. Good at work. Good. Useful. Convenient. (blade) sharp. To be sharp. To make a profit. To say things. 忠Sincerity. To serve with sincerity. Seriousness. To serve the state or sovereign with all one's heart. To work hard without bothering. You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > リチュウ Japanese Boy Names Variations.