俊人: a male given name

智人: a male given name / 智仁: a male given name

勝仁: a male given name / 雄仁: a male given name

human skin / (figuratively) warmth of the skin; body warmth

Only used in 一肌脱ぐ (hitohada nugu)

each person

論: theory, argument, view

理論: a theory

The hiragana syllable ろ (ro). Its equivalent in katakana is ロ (ro). It is the forty-third syllable in the gojūon order; its position is ら行お段 (ra-gyō o-dan, “row ra, section o”).

炉: furnace, kiln