She ends up losing the duel , but they agree to become roommates .
When Ikki inadvertently discovers Stella half - dressed , he is challenged to duel where the loser has to be obedient to the winner for life .
Stella ends up losing the duel , but they agree to become roommates .
When Ikki inadvertently discovers Stella half - dressed , he is challenged to duel where the loser has to be obedient to the winner for life .