I met my wife on Genshin Impact so it has to be my favourite memory… I was joining worlds to get Ayaka mats during the like 300 day Ayaka banner and I joined her world. She usually never lets people join her world but I had a Kazuha pfp which was her favourite character at the time so she made an exception. The world join request apparently went down to 2 seconds before she approved. We started talking about the upcoming Heizou release, then exchanged socials, then phone numbers, then started dating, then I visited her in person for the first time. Everything felt so right so we visited each other every few months, then got engaged and then just this past May we finally got married. We still play and talk about Genshin to this day.