The Void Lord's Journey

This is the story of a mage who says she only believes in herself, but is actually a tsundere, traveling through countless worlds.

"Master, if you can't trust me, then just treat me as a tool. Nobody would suspect someone who's just a tool (Servant), right?"

"I've come to take you home, my Valkyrie."

"Give those feelings back!"

PS: Holy Grail War (FZ and Singularities) - ?

PS: Brynhildr is the best!

PS: Please ignore the embarrassing early volume and go straight to the real first volume that comes later!