理性: reason; logic; rationality

probably because ~

(Hachijō) elder brother

海象: a walrus

勢人: (rare) a person with power and influence

one's deed / cause, reason

斉次性: (algebra) homogeneity

姿勢: posture / 市政: municipal government / 市井: the street, as in "the person on the street" / 市制: municipal organization / 死生: life and death / 刺青: tattoo / 至誠: sincerity / 四聖: the four great sages

Synonym of 電子メール (denshi mēru, “electronic mail”); email

Alternative form of Eメール