"It's good that you, a lowly Eunuch knows how to act in front of this Emperor but fear not, you have my blessings to speak with your lowly mouth" Klein replied with the side of his lips raising a bit
He would very much rather let Calix act in an immature way so that Klein can vent out his resentment
If Calix were to continue acting matured then Klein can't be that childish. He wouldn't be able to thoroughly crush Calix with his words
But since Calix himself has spoken 'against' Klein then the latter wouldn't look 'immature' even if he were to fight back
Klein's comeback causes Calix's face to twitch a bit. He very much wants to say more things as he can't just let himself receive such words
However, to avoid spoiling the mood, Calix just take another shot to vent out his own frustration
