You were William's younger sister. Twin sister to be exact. You were born about an hour after William making you younger. As much as he was cold and serious, he tried being a good brother around you.
His partner as a grim reaper was Grell Sutcliff. Of course, as William's sister, you had to go with him everywhere he went, meaning you had to see Grell. Damn, can he not stop talking.
“Oh William! You’re so cute! Your sister is so cute! Gosh, you both got the pretty genes! My heart can’t take it!” Grell usually says everyday
Your death scythe was similar to a grim reaper scythe, something like Undertaker had.
Today, you, William, and unfortunately Grell had a mission to collect souls. Again. On the way, you saw a young boy named Ciel Phantomhive and his butler, Sebastian Michealis.
“BASSY!!! HOW IVE MISSED YOU!” Grell said, trying to kiss Sebastian but he dodged it, making Grell fall.
“How unfortunate…grim reapers huh-“ Ciel said before noticing you. He’d usually see William and Grell but never you. He looked over at Sebastian before noticing he wasn’t there.
William's eyes twitched. He didn’t like men getting close to you
Ciel groans while Grell sat up agreeing silently