Sorry for the delay anon but I like to romanticize it as something that happens naturally between the both of them. I'm not sure if either one of them would initiate it moreso than just get really into the moment of exploring each other for the first time, setting aside the embarrassment and the knots in their stomach with tender, awkward kisses, gentle caresses and fondling. I think it'd happen sometime after they actually become official. Maybe they're both inebriated after some light drinking on a fancy evening out and they're staying out on vacation either in Albion at Vira's personal quarters or a hotel in Auguste. I think it'd be really cute and awkwardly intimate, and Vira reaching climax first of many times because this is like more than a dream come true this is literally Nirvana for her. I don't think it'd last that long, probably an hour tops bc Vira would get overstimulated after all the awkward foreplay. Also cute thinking about Vira being loud and Katalina having to cover her mouth and being red faced the whole time all the whole getting more turned on by the way Vira reacts to her touch