Thanks in advance if you can help! !

So I forget why it starts but kagome visit several universe to see how life turns out for the future. One is modern times and she meets with Sesshomaru to talk and stuff. Another Naraku wins and she is trapped with Sesshomaru and they manage to win somehow. Then I think it's one more where she stays in the past. My point is that while she's seeing her future she comes to realize Sesshomaru is always in it in any universe.

This sounds like "The Husband Catalogue" by Mythicamagic. I'm not sure if it's on Dokuga, but it's on Ao3. Kags goes through different universes where she's "with" different characters, but Sess is always there in some capacity. It's rated E on Ao3 (archiveofourown.org/works/24961645)