Crossover Anime: Creating a Multiverse Kinship from Grayfia

Linde transmigrates to various anime worlds, where Grayfia is his adoptive older sister and Rias is his childhood friend.
Furthermore, it has an awakening system that allows you to recruit your own demonic familiars.
From then on........
The demonic pact began to spread throughout the myriad realms.
......
Gurefia: Lind, I'm no longer satisfied with just being your adoptive sister.
Rias: My only fiancé is Lind.
Shiho Miyano: Master, can you replenish my mana?
Esdeath: Master, please make me stronger.
Erina Nakiri: My God Tongue is the best.
......
Unbeknownst to him, Linde had turned all the worlds into his pasture.