[Tachibana]

Spoiler for 38:

Your right about Akua's "survival", Tsukune shows very little remorse whenever Moka's life is in danger and i have to agree with you that Tsukune won't kill Akua he will still value her life because of his pure hearted nature, his heart is just as pure as Akasha's heart and like you say it isn't in Tsukune to actually take the life of another human or ayashi no matter how "bad" they are.

But what Akua has done is in the lowest way possible and according to Tsukune she would be considered "scum" so she won't be let off very easily without a good beating from him.

As for Touhou, yes he will definitely notice Tsukune and unique he is, such as taking notice to the Holy Lock and the Shinso blood inside him.

But as for the amount of energy used to execute the Jigen-Tou judging from seeing Linlin and Akua fight with it they were constantly using the technique over and over again. So Tsukune using the technique itself shouldn't be a problem for him, it's learning the technique thats gonna be difficult and according to Linlin the technique also requires stamina as well. Tsukune is great at stamina especially when it comes to those of whos life he values most and when they are in danger.

The true meaning to the Jigen-Tou is that it's used for mid range to long ranged attacks, slicing anything in it's path this will also be one of the many difficulties to learning the technique as well, but being a very talented and fast learner it will still be difficult for Tsukune but he would learn the technique entirely no doubt and master it, in fact Tsukune would need to master the technique in order to fight Akua on equal terms.

As for Tsukune's family, Ikeda designed them to be minor characters for which i'm kind of glad for if they were major characters then they would be in harms way via Fairy Tale. Kyouko is already aware that Tsukune goes to a school for ayashi but what she doesn't know is what flows through Tsukune's veins and as for Tsukune's parents considering that Tsukune's family are minor characters means that the chances of them learning that Tsukune is youkai is very low.

However, if Tsukune's family were to learn about him being youkai it probably won't be til near the end of the series with the way it's looking right now but like i said the chances are very low at this point.