Siblings who nearly die together, stay together (cult of the Lamb x reader)

What if Lambert had a sibling, and that sibling was you?

𝐏𝐫𝐨𝐦𝐢𝐬𝐞 || 𝙏.𝙈𝙪𝙞𝙘𝙝𝙞𝙧𝙤

𝐁𝐍𝐇𝐀 x 𝐊𝐍𝐘 [𝐌𝐮𝐢𝐜𝐡𝐢𝐫𝐨 𝐓𝐨𝐤𝐢𝐭𝐨 𝐱 𝐅𝐞𝐦!𝐫𝐞𝐚𝐝𝐞𝐫] ╰┈➤𝐈𝐆𝐔𝐑𝐎 𝐘/𝐍 is not any normal teenager or student you come across, she's a demon slayer. What if she had to go to U.A to protect the Marechi. Will she be friends with her classmate and experience the feeling of a normal girl for once or w...