Keigo's friend (with benefits), Rumi, was hanging out with the winged teen when she found a jar.

An odd jar.

A misplaced jar.

She mistook it for milk, and held it in her hands. 'Well, I am thirsty...' She thought before putting it to her lips.

She drank it... and she felt a figure come up to her lips and hit her. She was stunned...

Rumi turned to the side to see a distressed Keigo. "Rumi! What the fuck?! No! D-Don't!" He yelped, seeing it half gone.

What did she do!?