Yeah the translator notes should maybe have shown at the end that this was...mostly...the events of the actual myth. I remember one mentioning it earlier but perhaps a reminder would be useful.
Am I the only one who is kinda hoping it turns out they didn't sleep together? I dunno I like the themes of "No our bonds of friendship is stronger than succubus shenanigans."
That and I find "oh no i'm a girl and suddenly I want to fuck my best friend" cliche.
If I had a nickle for every blue haired TS protagonist who is denser than a neutron star I'd have 2 nickles which isn't a lot but its weird its now happened twice.