Life by the Sea Is a Little Wild

Enter at your own risk. An apocalyptic survival-in-an-infinite-world story, where the heroine seeks life (and courts death). Probably not scary. Hmm... This blurb says nothing at all. A note before you read: 1. The protagonist has been reincarnated many times, as both male and female. Sometimes they have neither breasts nor a dick, sometimes they have both, and sometimes they aren't even human. If you can't accept that, please click away now. 2. The love interest is nonhuman.