It's been theorized but never confirmed by Mihoyo. and Cosmic Juggernaut is fueled by the [Void] Herrsher core, unlike the star rail that is fueled by traveling, in other words, trailblazing.
[Cosmic Juggernaut IMG]
Anime & Comics · Shonpufi
Merlin
[Image of Merin]
Anime & Comics · Shonpufi
Cosmic Juggernaut
[Cosmic Juggernaut IMG]
Anime & Comics · Shonpufi
Sheath Avalon from Fate
[Avalon IMG]
Anime & Comics · Shonpufi
Angel Kokabiel
[Angel Kokabiel]
Anime & Comics · Shonpufi
Heres what the ritual kinda looked like
Before picture of fallen Kokabiel
[Image of fallen angel Kokabiel]
Anime & Comics · Shonpufi
Kinda looks like Krato's arm scars
Audrey Hall from Lord of The Mysteries
Yup, even Konayasaka or ORT would be less annoying than Merlin.
I wouldn't even have minded if I had gotten a BEAST or some other bullshit being from the Fate-verse.
Ultimate Herrsher in DxD
Anime & Comics · Shonpufi