A にせよ B にせよ (A ni seyo B ni seyo)
Explanation
Either A or B; Regardless of whether it's A or B.
Formation
Noun + にせよ + Noun + にせよ (also works with verbs in dictionary form + にせよ)
Detailed Explanation
The 〜にせよ 〜にせよ grammar point is used to express two possibilities A and B, indicating that regardless of whether it is A or B, the statement remains valid. It can be translated as 'whether it's A or B.'
Examples
雨にせよ雪にせよ、試合は中止しない。
Ame ni seyo yuki ni seyo, shiai wa chuushi shinai.
Whether it's rain or snow, the match won't be cancelled.
彼にせよ彼女にせよ、誰か一人が行くべきだ。
Kare ni seyo kanojo ni seyo, dareka hitori ga iku beki da.
Whether it's him or her, someone should go.
成果にせよ努力にせよ、どちらも重要だ。
Seika ni seyo doryoku ni seyo, dochira mo juuyou da.
Whether it's results or effort, both are important.
春にせよ秋にせよ、私は花が好きだ。
Haru ni seyo aki ni seyo, watashi wa hana ga suki da.
Whether it's spring or fall, I like flowers.
Grammar content sourced from hanabira.org.