Kyūjitai form of 大脳 (“cerebrum”)

development

to develop

extraordinary, unusual

emergency

very; extremely / exceedingly; tremendously

Kyūjitai form of 脳

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

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend