I hope you don't believe that adoption story, it's just what we tell the kids. In reality, they took off their school uniforms, held hands ... and played MAHJONG. https://i.imgur.com/45hGe.jpg
Keqing trying her hardest to impress Ganyu's mother (figure) with gifts and smooth talk was funny. I was like "ok next time wear your new dress, bring a bouquet of glaze lilies and ask for Ganyu's hand in marriage". lol I believe in you Kokusei