he; boyfriend

dense, without breaks or openings / meticulous, carefully done, scrupulous / (of relations among people) close, familiar, intimate

density / secrecy / carefulness

something without breaks or openings, something dense / a secret, (especially) something done secretly / (Buddhism) the teachings of esoteric Buddhism

Kyūjitai form of 便秘 (“constipation”)

secret society

freedom of association

gossip, rumor

(colloquial) current boyfriend

everything