to behave; to be on one's best behavior / to have self restraint / to be penitent

a close relative / a near relation

Kyūjitai form of 謹慎: self restraint; moderating one's behaviour; penitence; discipline

feeling, sensation, emotion

feeling; sense

to be occupied with, focus on, be busy with

(literary, figuratively) gushing forth

(literary, figuratively) to gush forth

(informal) the testicles as an attack target / (informal) attack on the testicles

無力感: feeling of powerlessness