tease, prank, trick, practical joke, mischief / playing with (a lighter, for example), tampering with, fooling around with, messing around with / hobby, pastime / action that is a considered a misconduct

悪戯者: prankster

useless, pointless, fruitless / unsatisfied because there is nothing to be; tasteless / in idleness

a kind of women's hairstyles in the late Edo period

prankster

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

to know, be aware of / to learn, acquire, / to be acquainted with, to know (someone) / (colloquial, in the negative) to care in the least about, to be concerned with,

school (institution dedicated to teaching and learning)