Ichii (イチイ)

Ichii is 2 years older than Nina and Zero. He is depicted as a kind and gentle-natured boy. He is also exceedingly polite and mature, thus making him a gentleman.

Ichii grew up with his elder step-sister, Sarasa, whom he had feelings for and whom was the only one he trusted until Zero came along. He had a rough past, but opened up more ever since the day he met Zero approximately three years ago. Later he tells Nina that he loves Zero.