Now that everything is cleared SHIELD explains the situation.

"Okay. How about we start with what are chiropterans and how do I kill them?" Walter asked.

David comes into the room.

"Chiropterans are bat-like creatures that feed on the blood of humans. And to kill them Saya's blood is the answer. Her blood is poisonous to them and coming into contact with it will instantly kill them."

"So you're telling me that the only way to kill them is with Miss Saya's blood." Walter said.

"For now, that is our only method. But slicing the head off should be effective as well." David replied.

"Good, then slicing them to bits will be easy enough. Now where are we going to do this?"

"Saya has received a letter from the phantom. We will be seeing him in the Duomo di Milane at midnight where they will be releasing the chiropterans into the city. We need to kill any chiropterans that to the city while Saya and Haji handles the phantom."

"Alright then, let's go."

Duomo di Milane 12:00pm midnight.

"Sir Walter, are you in position?" David asked.

"Yes." Walter replied.

Mean while at the top of the Duomo the phantom stood.

"My dear Saya. I knew you would come."

"Cut the small talk phantom, where's Diva?"

"She's not here. She is too busy preparing for her concert to play with you Saya. But don't worry I'm sure to keep you company my dear."

The phantom changed into his chiropteran form and let out a deafening screech sending a message to the chiropterans hiding under the city.

"Walter we've got chiropteran sightings from your position." David reported.

"I copy that. You can leave them to me."

The angel of death put on his gloves and prepared to engage the rampaging army. Chunks of chiropterans were flying everywhere as Walter hacked them to bits.

"I should get out more often."

Saya and Haji on the other hand were having a hard time dealing with the phantom.

"Oh my dear Saya you have lost that primeval ferocity you had the last time we met. I am afraid you are losing you edge. Let me help you get it back."

The phantom launched spear like spines at Saya. Before it could hit, Haji pulls Saya out of the way and uses his body to shield her from the spines.

"Haji, are you okay?" Saya said as she pulled out the spines.

"Don't worry, I'll be fine. Look out!"

Haji pulls Saya out of the way as another barrage of spines flew towards them.

"Hahaha. Is this the best you can d-"

As he fired another batch his arm was suddenly sliced off.

"Sorry to keep you waiting. I wasn't as fast as I used to be." Walter said as he appeared out of the blue.

"Who the hell are you old man?" the phantom asked.

"Me. I'm just a humble butler and an ex-Hellsing assassin."

"Whatever old man I'm gonna kill you for getting in the way between me and my dead Saya."

"Be careful sir Walter he's one of Diva's chevalier. He's not like the others." Saya warned.

"Is that so? Well then I should make this quick. Ms Saya would you please put a little of your blood on my strings so that I can finish this punk."

Walter's voice was stern and frightening. Saya did as he said and stepped back.

"I'm getting tired of waiting old man. I'm gonna send you to the deepest pits of hell." The phantom yelled.

"I really don't like being called old."

Walter sent his strings flying and wrapped the phantom in its deadly grasp. And in an instant Walter pulled the strings and turned the phantom into chunks of chevalier meat.

"And nobody challenges the angel of death and lives to tell about it."

The next day.

"Well it's been fun but my time here has come to an end." Walter said

"Thank you sir Walter." Saya replied.

"And we may be meting each other again soon." David added.

"I agree. But for now this is farewell."

Everyone gave their best wishes to Walter as he flew back to England. And when he returned to the Hellsing mansion everything was a mess. Integra's office was filled with unviewed paper work. Seras's room was the only one that remained unchanged.

"Walter, I'm so glad you're back." Integra said.

"Welcome home Walter." Seras added.

"I see you had fun Walter. Tell me how was your trip?" Alucard asked.

"It was a great experience master Alucard."