本ほん来らいなら

expression

by all rights; properly speaking; normally

Used to state what should happen or be the case according to rules, expectations, or common sense. Often followed by a contrastive が or けど to introduce the actual situation.

• 本ほん来らいなら今日きょう中じゅうに提てい出しゅつしなければならないが、まだ終おわっていない。

  By all rights I should submit it today, but I haven't finished yet.

• 本ほん来らいなら彼かれが責せき任にんを取とるべきだ。

  Properly speaking, he should take responsibility.