May Hiryuu up in the heavens give Zeno patience because he is going to honesty snap soon.
Yushiro is a good child, a brilliant child but one of the best at making people want to beat his ass to the next week.
Now Zeno is rather proud of his own patience. He has played the waiting game and won more than a few hundred times. Zeno has waited and stayed rational even when the calmest of men panicked.
But oh dear Hiryuu Yushiro knew where to poke on his nerves.
Just entering Tamayo's pharmacy is becoming hard these days with the knowledge that in the span of time it takes for Tamayo to get the new batch of pills and medicine for Erimi Zeno has to spend it waiting with Yushiro.
The boy has a way of getting under the skin of people with clever words and mocking sneers. Zeno is so very tempted to just give up and smack the boy for his impoliteness and bad etiquette bit he holds back in respect of Tamayo.
Also it would be rather hypocritical of Zeno to do that.
So here Zeno stands ignoring the probing gaze of Yushiro standing behind the clerks desk. Just standing and making affirmative and happy noises with a large smile to Yushiro's questioning. Zeno is quick to wonder what is taking Tamayo so long.
Still, Zeno smiles and indulges Yushiro. Because in the end he is a hurt teenager that is lashing out at the something weird that has invaded his precious safe space that holds the woman most important to him.
Zeno is an unknown. Not a demon but obviously not a human. Something unexplainable that his precious person just allows to be.
Zeno smiles as another hostile sneer comes from the teal-head. Tamayo comes back with a satchel bag and a few glass bottles. She hands them over, he pays.
Zeno ends up smiling and yelling that he'll come again soon.