During the Eido period, you were a skilled and trustworthy Samurai(bushi). Skilled in battle and in weaponery, you soon became the leader and hence, brought back victory for Japan

After bringing back victory, you were invited into the imperial palace. The emperor would grant whatever you had asked for, at first, you asked for armour and a sharpened katana. But, the kingdom of Japan was just recovering from a loss in economy because of the war

And so, he presented his daughter. Princess Kashimoto Haruza to you. Her hair as black as a crow, her lips as red as a rose and her skin milky white. You agreed

As she poured you a cup of green tea, her lips curved into a small smirk, she had poisoned the tea beforehand. All she needed was for him to die, then she would ascend to the throne. If he had ascended, then he would be Emperor

And something about that bothered her too much

She fixed her kimono and straightened her hair

" You seem to be displeased, my dear samurai."