The Grail War begins!

The rest of the school day passed without incident. Sakura grinned as she was going to her old family's house to summon the servant that was going to protect Shirou. As the last class of the day had finished. Shirou stopped her and told her he was going to stay back and clean the archery fields. Nodding at her owner's declaration, she checked in with Rin, who wanted to scout for potential enemy servants. A simple request from Sakura ensured she'd be doing that around the school grounds.

Sakura grinned as she walked down the road to the Tohsaka manor. Looking in on Ayako as she walked home, Ayako would have her stuff brought over in a moving van the next day, so she didn't need to be at Emiya's place to receive it tonight. Rin nodded as she continued her walk into the Tohsaka manor... her old home...

Shirou was spending a lot of time scrubbing the floors and polishing the archery club's room, much to Rin's frustration, Her and Ishtar had hung back after school on the grounds and been scouting as best they could while remaining on school property, but they'd gotten as much as they could after the first hour. Meanwhile, Shirou Emiya was still giving the club equipment a thorough washing, and was still going even after night fell, reducing the two of them to holding conversations on the Roof while letting Rin's gemstone familiars scout the rest of the city.

'So...' Ishtar said inside Rin's head. 'I know Shirou doesn't own us, but since Sakura does, are we moving into his place?'

"Not much choice, is there?" Rin said dejectedly. "The high jump kid owns Sakura, who owns us, so unless he doesn't speak up and Sakura says otherwise, we're going to be living under Shirou's roof." She sighed. "I'll have to see about what I can bring over, but since he's not a mage, I'll have to keep it a secret until it comes up... of all the things to mess up the Grail War, finding out I'm my sister's property was not something I expected." She bemoaned, feeling Ishtar's sympathy for the turn of events.

"Not how I expected to find my first target..." A new voice called out, Rin jumping up as she looks towards a higher part of the roof. A woman in a bodysuit holding a red spear was crouching up there, looking down as her long hair flowed in a light breeze. She stood up and pointed the spear at Rin. "Your magical energy is odd. You feel like both a Master, and a Servant." Ishtar took over, Rin's clothes fading into the garments Ishtar normally wore.

The new servant - probably Lancer - lunged forward with her spears, Ishtar dodging the first volley but manifesting a truly massive bow to block a follow up swing from a second spear. She wasn't holding that before! Rin exclaims in their head, Ishtar taking to the air with their new weapon, firing back a volley of shots.

Shirou had finished cleaning the Archery club room and equipment, stretching as he looked over his work. Shinji had asked him, and as difficult of a person he was, they were friends (supposedly). And he knew if Shinji didn't want to do something, he wouldn't do it if he had a choice. And, to be fair, it did feel good to be back here again-

Boom! Bangbangbangbang! A series of noises drew Shirou's attention to the courtyard, observing two women fighting with a spear and blasts while... flying in the sky? and was that Rin!?