My Very Best Friend (最高の友達) is a 2-slot Cat Combo.
Witch Killer Effect Up (XL): Cats with this ability will inflict x25 damage and only receive 1/50 damage from Witch Enemies.
|Cat||Icon||Rarity||How to unlock|
|Li'l Madoka||RR||Drop - Madoka Magica Collab|
|Li'l Homura||EX||Campaign Reward - Madoka Magica Collab|
The name of the Combo is reference to the final episode of Puella Magi Madoka Magica: "My Very Best Friend".