Oshi mark 

Oshi marks are emojis that represent a VTuber. In some cases, a VTuber can have a double oshi mark, it means they use 2 emojis instead of one.

Ceres Fauna's oshi mark is "🌿"
Hacchama's oshi mark is "❤️ 🔥", it's a double oshi mark!

Oshi mark by Yunara November 9, 2023