academic major

specialize in, major in

an early time

早く: early / 早く: quickly, soon / 速く: quickly; fast

早し: (archaic) early (classical terminal form) / 速し: (archaic) fast, quick (classical terminal form)

林: woods, forest / 囃子: musical accompaniment in traditional Japanese entertainment forms such as noh

林: a surname

continuative of 生やす: grow / continuative of 囃す: accompany by music, provoke

with incredible speed / (formal) even at the fastest

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend