a boy, a young man

two days, a two-day period / the second day after some set point in time / the second day of the month

refine / train / tempering / drill / polish

short for 蘇我蝦夷 (Soga no Emishi): Asuka-period statesman of the Yamato court, son of Soga no Umako and father of Soga no Iruka