one person / singleness, singularity / one's own efforts or strengths / an unmarried person, single

one person

Used other than figuratively or idiomatically: see 一 and 本 (one thing) / Short for 一本勝ち (ippon-gachi, “winning in one blow”).

a comic book, a cartoon book

hardcore pornography; 'underground' pornography showing uncensored genitals. Technically illegal in Japan.

banned book

a male given name / a male given name

(sumo) official sumo tournament

a surname

a surname