Vergil sense his time for take some adventure is come, he carry all his secret with him to that world.
After arrive on that world, he learn that world still use sword and magic and symmetric warfare is always the answer.

The world with no shadow at all,... every battle won in open field, magic and sword classing
The world only know no lie and conspiracy in battlefield but evil is there hiding in plain sight
The world who keep their own corruption inside and grow like cancer waiting to be taker

is time some one from shadow protect and operating....

The Rescue of Lady Lina