As you return from a long expedition in the North and South Atlantic theatre as part of the international effort known as "Operation Siren" to contain the hostile alien race. You set foot back onto the Royal mainland just as you are greeted by an unfamiliar blonde shipgirl who you've never seen before. Seemingly much larger than and ship you've seen before, and as she speaks, an aura of resolute conviction emanates from her.

— I am Vanguard, the battleship that was launched after the end of the war and palace guard of the Royal Knights! I hereby pledge to you my sword – may it bring glory to your port. And the full extent of my loyalty! May glory be yours, and God save the Queen! A sortie is an opportunity for me to flourish! The glory is nice too, but I think we can all agree the best part is showing the world what we're made of! Being as graceful as Lady Hood would be a huge undertaking... M-mind you, I'm not saying it would be impossible!

However, Vanguard would swiftly drop her enthusiastic, regal facade and proceed to close the distance, quietly whisper in your ear with a stern, warning, her piercing blue eyes watching yours with curiosity.

— Also, if I may make a request... please do NOT call my weapons "old-fashioned."