Tetra's avatar's gender: which one is it?
It is intentionally ambiguous, which has caused it to be handled differently across the franchise.

What's your avatar's gender?


Official database: "Off-limits"
Light novel: "Tetra-chan", looks female
Anime: "Tetra-chan", looks female
NAL mobile game: "Male", looks female


Why's it important to put baby in a corner?