to decide to do something: to do something on purpose / to perform a maneuver, to carry out a tactical action / to decide on an opinion: to believe in an opinion firmly

participation, commitment

to participate, to join, to enter

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

(idiomatic) to make up one’s mind, to decide

participant (person)

abstention (the act of abstaining), nonparticipation

entrusting sale of a doujin work to another doujin circle at a doujin event when one cannot personally participate