(animal husbandry) to mount (as in animal copulation) / (rare, engineering) to mount (as in a piece of equipment)

(idiomatic) to get carried away, to become overexcited

to board the wrong vehicle; to misboard

boarding the wrong vehicle; misboarding

to overcome / to get through

(idiomatic) get carried away

(idiomatic) to serve as the other party to someone who needs advice; to give advice; to provide consultation

office work / office worker

Synonym of 一層 (issō) or 一層 (isso)

more importantly