Although not a fan of magical girl anime, I decided to watch "Gonna be the Twin-Tail!!". It gave me an idea for a 1x1 with a possible romantic angle:
Our characters have been friends since childhood. However, despite being as close as they are, they've kept secrets from each other. She is a sort of Magical Girl Warrior, while he is a darker, less forgiving vigilante character along the lines of Emile from Halo or Ghost from Call of Duty. When their enemies form an alliance, they discover each other's secret.
In this case, I'd prefer to be the male character.
Our characters have been friends since childhood. However, despite being as close as they are, they've kept secrets from each other. She is a sort of Magical Girl Warrior, while he is a darker, less forgiving vigilante character along the lines of Emile from Halo or Ghost from Call of Duty. When their enemies form an alliance, they discover each other's secret.
In this case, I'd prefer to be the male character.