After wandering from place to place for a time, Haku was found by Zabuza who recognized his talents and agreed to take him in as a tool. As a result, Haku becomes unquestioningly protective and loyal to Zabuza, as he found a purpose in life by being useful to his master. He ultimately gives his life in his mission, becoming a human shield to protect Zabuza from Hatake Kakashi's Lightning Blade.
Beautiful cosplay! I’ve always sympathized with Haku’s storyline for some reason or other… Maybe every one of us are seeking for that purpose in our life? Thanks to Jeni for sending this!