deepen

the national history

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

a piece of research, a study, investigation

to research, to study

(collective) the Six National Histories (日(に)本(ほん)書(しょ)紀(き) (Nihon Shoki), 続(しょく)日(に)本(ほん)紀(ぎ) (Shoku Nihongi), 日(に)本(ほん)後(こう)紀(き) (Nihon Kōki), 続(しょく)日(に)本(ほん)後(こう)紀(き) (Shoku Nihon Kōki), 日(に)本(ほん)文(もん)徳(とく)天(てん)皇(のう)実(じつ)録(ろく) (Nihon Montoku Tennō Jitsuroku), 日(に)本(ほん)三(さん)代(だい)実(じつ)録(ろく) (Nihon Sandai Jitsuroku))

everything

(colloquial) current boyfriend