Characterization concerns...
Mytho is a difficult personality to grasp because throughout the series he is an incomplete and constantly changing character. In the beginning he was without any emotions or personality traits except that he would protect the helpless. As Princess Tutu returns heart shards to him, he gains the ability to feel the emotions she finds, building on his character so that he looks like he is regaining his old personality as the prince with each shard she returns. Most of his behavior in this season is met with the reaction that this is the first time he smiled/cried/felt fear and not really habitual. What seems to have been gathered from Mytho’s personality overall in the first season is that he is a tragic character, but with an inner strength and grace that makes him admirable even though he doesn’t do much to expect it. He is the ideal potential. And the willingness to suffer and his ignorance of his returned feelings are only just beginning to be reconciled.
Of course at the start of the second season we discover that heart shard Kraehe stole in episode 11 is slowly turning Mytho into a monster just like the raven. He spends most of the Chapter of the Chick either a villain trying to steal the hearts of girls or struggling helplessly to stop his transformation. Raven prince!Mytho is fun, but only as a sometimes character I think, especially since it’s not really him. Apping him from the end of the series would be pointless since he would be restored as the prince and thus defeat the purpose of the other characters to continue their stories. The story would have effectively ended.
This Mytho has the raven’s blood infecting him, not to specifically cause angst, but because that kind of suffering was the definition of his personality. As long as he is Drosselmyer’s character he must suffer somehow. At the same time Mytho has enough emotional basis to form connections with people and talk to them of his own volition, like when he asks Ahiru to keep being his friend or scolds Fakir to be nicer to girls. This also allows me to play off his newness and naiveté to the camp, which has more canon support to play off of, given the events of the first season. In addition to this I’ve borrowed some of his reactions in the manga to supplement my play since he is a more consistent, stable character there (despite the anime being vastly more interesting).
I think it’s reasonable to assume that while he may react adversely to the infected emotion sometimes, he doesn’t necessarily have to let it progress or give into the “magical girl’s male lead must be brainwashed and then saved by love” syndrome. One, Drosselmyer isn’t here to progress the story. Two, the raven isn’t here to demand a heart’s sacrifice. Without these two factors influencing him Mytho is much more capable of staving off the influence of the raven’s blood but still keeping himself aware of it.
That said, things that will likely set him off:
1. Kraehe
2. Discussions of love in a very passionate/selfish/personal way.
3. Any conversation that leads to him doubting his ability to triumph over the raven and win a happy ending
4. Hot sake and yakitori (okay not really, but that was a funny omake in the manga)