There's a reaction, you pessimistic bastard

Kai's gaze falls over the beakers and the flasks lying in the row. He picks up a half-filled flask with pale orange liquid and takes it toward Noah. "Alright, drop your blood in it."

"I thought that you had my blood." Noah looks at him suspiciously. 

"I used it all for trials earlier." Kai urges him to drop some blood. "Come on! You are healthy now. Don't you want to get over Izo? If you find your true mate, you can be assured that you will get over Izo."

But… Noah's heart clenches. He doesn't want to get over Izo. Being in love with Izo for so long, he can't give up his feelings yet. "Fine."

He doesn't think that Kai's litmus test will work. So he bites his finger and drops some blood in the flask.

The red drops of blood submerge into the orange liquid, spreading out as the orange liquid slowly turns blue. Noah stares at it with disinterest. What, true mate? There's no way that he has one. He's a guy who likes guys.