Purple Tongue?

You and Kendo had a secret relationship. You both kept it secret because she said so. Maybe two people knew but that would be more than what's needed, since she needs calm to keep her class in line.

Still, a leader like her has weak spots. You, of course, and well, after a couple stupidities... You both ended up with purple tongues. Somebody found out, but yeah, your decision.

(Aged up!)