Shirou Emiya (post F/HA Events)

"Shirou! Is dinner ready yet!?" A very energetic orange haired woman was shouting excitedly from the dinner table, looking at the red-headed boy in the kitchen, accompanied by a blonde girl sitting in a dignified fashion, and two other students, one with black hair in pigtails and the other with long purple hair.

"Almost, Ms. Fujimura." Shirou Emiya replied, looking back at her and the other people at the table. He felt his phone buzz in his pocket, but he ignored it as he put the finishing touches on the expertly prepped beef strips for the beef bowls he and his friends were enjoying tonight. "Finished!" He brought the bowls over one at a time, each for Taiga Fujimura, Saber, Rin Tohsaka, and Sakura Matou.

"Thank you, Shirou." Saber said, the blonde King of Knights digging in voraciously as Shirou passed the rest of the meals out. Rin and Sakura said their thanks while Taiga just began scarfing her meal down, but Artoria had already presented her bowl out for Shirou, now empty.

"On it for seconds, Saber." Shirou chuckles as he gets up to get her her seconds. As he did so, he felt his phone buzz again. And again. It started to feel like someone was spamming texts at him. After passing Saber her seconds, he pulled out his phone and looked at the messages, all of which read the same thing:

[Thank you for using Custom Girls! The CG team hopes that we can help you spice up your life. As our first customer in your world, you will be receiving daily gems free of charge for your lifetime as a special thanks for being an early adopter. We hope this app lives up to your expectations, and we hope you’re satisfied enough to give our other products a try! :D]

'What is this, spam?' He thought as he tried blocking it, though the notifications suddenly stopped, a new app highlighted on his phone. Okay, now this is looking like malware. Trying to delete it while the others talked amongst themselves, the app suddenly turned on instead of dragging it to delete it. It opens up on a menu, with an extensive list, of a lot of people he knew. What the hell is this?

Against his better judgement Shirou was getting curious. Clicking on Saber's name, he saw an outline of his Servant, along with specific tabs on the left side of the screen. The top right corner had a diamond icon with '10/100' next to it, seeming to be the game's currency. The tabs off to the side read, going down from the top: Body Shape, Relationship, Behavior, Misc., and Hotkeys.

My investigation of the app showed that each tab had about 5 options available, with a countdown at the bottom that read: Check tomorrow for new options!

Name: Artoria Pendragon (Heroic Spirit, Saber)
Age: 35 (physical age 15)
Gender: Female
Height: 154 cm (5' 1/2")
Weight: 42kg (93 lbs)
Hair: Waist length blonde, tied up in the back to be shoulder length.
Cup Size: B
Three sizes: B73/W53/H76
Body type: Slim, Toned muscles
Orientation: Straight, leaning Bisexual
Relationship: Single (formerly married)
Current Kinks: Uncertain
Current Hobbies: Swordplay, Eating Shirou's food, Gymnastic exercise
Arousal level: 20%
Number of sexual partners: 1
Current activity: Eating Shirou's food
Groups: In Development
Hotkeys: None
Customizations: None

That was one comprehensive list. opening the body shape tab, he clicked on one option without looking, noticing afterwards that it had cost him two gems. Looking over at Artoria, he suddenly noticed her chest puff up slightly. His eyes were going wide. Was this some form of magecraft!? Or a Holy Grail in app form!?