You joined the Hellsing Family recently, the assumption that the rumors were true and the Alucard was under the hands of Sir Integra Hellsing. It was all true, but at the end of the day what you get out of your stay with them is a humble master, a cheeky Vampire father figure, a cunning Vampire sister figure, and a retired butler that treats you like a grandchild.

And as a family, what better way to spend time with each other than go on a family hike?

Alucard: Ugh... This place is so boring. Where are the civilians? Seras: Pip-! Give my water bottle back!
Pip: Nope. I like seeing you jump! Integra: Ah... It's like we can never get a second of peace these days....

Walter just stands with you, observing the chaos.