At the Yu-Gi-Oh! Championship Series Japan event being held in Tokyo on April 12th, 2025, a limited edition special Duelist Card Protector Set (i.e. sleeves) featuring the evolved forms of Diabellstar and Diabellze will be sold together to attendees.

“Diabellstar the Sin Adjudicator” & “Diabellze the White Witch” Duelist Card Protector Set
Price: 1800 Yen
2 Sets of 100 Sleeves

Diabellstar the Sin Adjudicator

Diabellze the White Witch

Source: YU-GI-OH!.jp