(mahjong) a 役 (yaku, “winning condition”) for declaring a ready hand on the first go-around of play, worth 2 翻 (han, “doubles”)

成り掛ける: to be on the verge, to be on the brink.

賭け: gambling, betting / 掛: credit / soba served in a hot soup

to call by phone

when it comes to... / in the filed of...

to address someone, to direct, to do (something to someone) / to be about to, to begin / in the middle of, to begin (not complete)

cosplayer

(games) strip mahjong, a Japanese tile game based on mahjong, whereby the loser has to remove an item of clothing.

honorific of かける (kakeru): (honorific) to sit down

(idiomatic) to be even more so