[来る → こよう] + が/と + [来る → こよう] + が/と
Note: The two items are typically contrasting (e.g., verb + its negative/まい, or two opposing adjectives/nouns). Question words (何/誰/どこ etc.) + volitional + が/と can also be used in a single-item pattern.
The pattern ようが~ようが / ようと~ようと is used to express "no matter whether… or…" or "regardless of whether… or…". It presents two (or more) contrasting or alternative conditions and states that the outcome remains unchanged regardless of which one applies. This is a strong, emphatic expression typically found in formal writing or resolute speech.
The pattern is built using the volitional form of verbs, or with question words:
Typically, two contrasting possibilities are listed – often a verb and its negative, or two opposing adjectives – to convey that neither condition matters.
Both forms are interchangeable in meaning. ようが can sound slightly more emphatic or literary, while ようと is also common in both spoken and written Japanese. There is no significant difference in nuance.
This pattern frequently pairs with question words such as だれ誰、なん何、 どこ、いつ to create an even broader sense of "no matter what/who/where/when":
The main clause typically expresses a strong will, determination, or an unchanging fact. This pattern emphasizes the speaker's resolve or the inevitability of the outcome, making it quite forceful compared to softer expressions like ~ても.