(mahjong) red dragon (tile)

China or Chinese; Sino- (prefix)

(offensive, Internet slang) Alternative form of 子供部屋おじさん

(offensive, Internet slang) a man whose age is greater than about thirty or forty who lives in one's child room and with one's parent(s).

single room

double room

Synonym of 黄昏 (tasogare, “dusk; twilight”) / Synonym of 黄昏時 (tasogaredoki, “dusk; twilight”)

is the best among (others)

(volleyball) a middle blocker / (soccer, rugby, handball) a halfback

the truth being unknown due to conflicting accounts; a Rashomon-like situation