On the BvS Main Menu there is an option to input a code found on the bottom of the AnimeCubed homepage. When you input this code, you gain 50 Stamina + 30 Stamina if your village have BurgerNinja.
If you input this code for multiple days in a row, you will have a Bonus Streak which provides additional benefits. The benefits are as follows.
- 7 days: +100 Stamina
- 14 days: +100 Stamina, 10,000 Ryo
- 21 days: +100 Stamina, 20,000 Ryo
These bonuses are in addition to the normal stamina for entering the code.
There is also a BvS Video Challenge where you answer one question a day, based on the anime trailers on Anime Videos - Clips and Trailers, for +30 Stamina and a Roll of Tickets (once per IP)
Occasionally, there are other events that will provide daily stamina bonuses (such as the Professor Layton and the Curious Village daily bonus). These bonuses are almost always 30 stamina.