Final Quest

You slowly walk towards the waterfall.
"Esther, what are you doing?" Torai hisses. "That water could be dangerous!"
"Why would a waterfall be in a room inside?" Alasse chimes in.
Ignoring them both, you cup your hands, and drink the water.
Instantly, you feel revitalized. Strength fills your body, and you feel like you can take on any enemy which comes your way.
"It's safe," you tell Torai and Alasse. However, neither of them want to drink the water.
What do you want to do?