User blog comment:Crimson and Darkness/DxD Updates 2~/@comment-27083298-20180211030557/@comment-30924344-20180211200318

No it's just calle SLASHDOG 2 so that's how they are name: 'SLASHDOG with sequence number'. Besides it makes no sense Ishibumi would have time to come up with a title for V25 but not for V2 of SLASHDOG.