Search gender: all male female オンケイ Japanese Boy Names Variations. 1 names found. gender: all male female Name: onkei Katakana: オンケイ 0 Kanji: 恩慧 Meaning: 恩Debt of gratitude 慧Wisdom. The ability of the mind to see into the mind. You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > オンケイ Japanese Boy Names Variations.