[Event]<Player>≪Kasuga≫<Effect> If there are 2 or more cards with "Tombcastle" in their card name in your Charge, your Player Ignition Overboost, and turns into Z/X with ≪Kasuga≫ in its card name. This card can only be played in your turn, and only if there are 6 or more cards in your opponent's Resource.
"So you are threatening me with a quiet look" "Kasuga reluctantly imitated her devil personality. Sorry for taking such unfair means" "It's okay. Now that you've took me outside the castle, I'm going to enjoy myself!"
"If you cooperate with Kasuga, Kasuga will ask Mika Nii-sama for permission to enter the library of Kuzuryu Gakuin University" "If I refuse?" "You are forbidden to get out" "Hmmm. So you are threatening me with a quiet look"
"There's no bond between me and Kasugatchi yet since we just met not a long time ago. So how we able to perform Overboost?" "It's easy if Kasuga thought of Nei-chan as Mika Nii-sama that turned into little girl" "What the heck with that"
This card is also treated as "Tombcastle" (墓城 Bojō) card due to its Japanese name.