>>95859902It's pretty weird to see a Holo actively promoting an Indie, and it has never really happened that a mainstream V-Tuber advertises her sister (in fact I don't think there are many V-Tuber brothers/sisters, besides the obvious)
I find it cute because it reminds me of those siblings in which one sibling plays in a Top Level League while the other is a Second Division runt, like the Mbappe brothers.