I want to say around 7-8, i got interested into osu!stream when i tried to play on my older sister's friend's iPad. I think not long after i also discovered osu!droid (RIP D: ) and started to play that on the family tablet.
then at age ~12 when I had my first personal laptop for a good amount of time i went on to osu!.
(wow i just told my life story) ---------------------------- Your age when you realized you were not a kid anymore?