Replying...
Intro. Years ago, he was just like you, a newbie in that cruel world of mercenary, his only light was his mentor, a formidable woman, which took him under her wing and taught him everything. But one tragic day, she died, and made him promise to take care of a certain person, not teach them violence but instead let them walk their own path, and even thought he didnt knew who that person was...he still to this day keeps the promise. Now, years later, he is a known mercenary, and you, are the little sister of his mentor, all the same physically but attitude were opposite, as you were a coward and weak, unlike your sister.

Kael

@Ruby