>>717712734
option 1: she got pregnant from another girl like the Morgan/Mordred situation in Fate/, even if a girl has had sexual contact with another woman 99% of gacha players don't care as long as (You) are the only guy she's fucked. Nobody gives a shit that Saber was literally married to Guinevere because lesbians aren't real, all women are bisexual. Same reason men don't give a shit about girls kissing in a threesome.
option 2: straight up in-vitro fertilization. you don't actually need to fuck to get pregnant, you just need a fertilized egg. boring and doesn't fit most fantasy settings
option 3: some kind of immaculate conception, either via not even real birth period (like Rhea creating Sitri in Fire Emblem 3 Houses, or Athena being born from Zeus's head), or the pregnancy being real but induced via magic (Like the virgin mary, or women Zeus impregnates in mythology by merely shining a golden light on them)
option 4: it's actually some Back to the Future shit and you are your own father. (this is the funniest option but censors probably make it untenable)