>>27271216From my experience as a wagie I would guess that contacting them at the behalf of the company you're working for is the best move in order to get them to reply.
Costs on sponsored streams are most likely highly variable, and the conditions will be shit like how long will the game take, what kind of content there is, if there's nsfw and political shit yada yada.
Nijisanji is pretty lax with sponsors as far as I've seen, you just gotta be trusted, they won't do that with anyone.
>>27271184Don't forget about the dragon hand....