older paternal half brother

younger paternal half sister

tensan silk thread; silk harvested from Japanese silk moth cocoons

(slang) a women's city bicycle, a kind of everyday urban utility bicycle with a front basket and a rear rack

(humble) alternative form of いってきます (itte kimasu)

back and forth

(colloquial) Synonym of 行って来ます (itte kimasu, “see you later”)

to go and come back

not straightforward; not dealt with by ordinary means

Alternative form of 一筋縄では行かない (hitosujinawa de wa ikanai)