I got one ardent one shiny Boxie from Crowsong Hollow in Huaxu. Same day, same time. So, check that place out guys. You might stumble upon smth. There're 3 spots there!!! and it can spawn on any of them. Yes it's still rng but idk I got a shiny spawn 5 times already and in 5th time I got succesful with a ardent boxie as a bonus which I didn't have as well)) Here's the visual data.

Crowsong Hollow is this location.

I'm not gonna feed them each other. I'm kind of collecting every type of genimon type and ascending them individually)

My legendary Miraculous Boxie[that I feed milk to))]

Shiny