Witch & Demon.

Valerian finished killing the two soldiers and burnt their bodies with flame mana. The execution was quick and clean. Haista frowned and asked, "How many people have you killed before you came to join the order?" 

Valerian replied without hesitation, "I never counted." 

His answer would not have bothered Haista if he was older, but the old Commander knew this child was yet to reach sixteen. The two of them returned to where Valerie was, and the old man asked, "You said you have walked through the flames before?" 

Valerian nodded, and Haista asked, "What is it like, to take the last step?" 

The young man said, "I do not recall. All I know is that when I took the seven tests, my heart was firm enough to avoid all the obstacles. The goddess does not test you for a merciful heart, but she tests your belief." 

Haista thought briefly before he nodded and asked, "So, what is your belief?"