とも

とも is a formal, often literary concessive marker meaning 'even if / no matter what'. It emphasizes that the following outcome or fact is independent of the preceding condition. It can sound more emphatic or elevated than the everyday ても, and it is common in written Japanese, formal speech, or fixed expressions. The form changes depending on the part of speech of the clause before とも, similar to how ても works, but it often carries a stronger sense of contrast or inevitability.