What Comes After Four? (BFB+Omori)

Seven minus Four is?...

Two and X head over to Seven's house.

They knock on the door.

Someone opens the door.

"Hey, Seven!" said Two. "Wait, you're not Seven..."

"I'm Thirteen," said the feminine Algebralien. "I'm Seven's caretaker. I am watching over him because their parents are on a very important business trip."

"Okay," said Two.

Seven looked around Thirteen.

"Hey, Two... Hey, X..."

"Hi, Seven! Guess what? After a looooooong day, we finally got your photo album back!"

"Hooray! Now we can all look in it together..."

"Do you, uh, want to have dinner with us?" Thirteen asked the duo.

"Sure!" said Two. "Come on, X! Free dinner!"

X and Two went into the house.

Seven and his friends sat down on the living room floor.

Seven opened the photo album.

The three Algebraliens looked through the pages.

Some memories, some times that they spent together...

"There are still a lot of photos missing," said Two.
"I think Six took them for herself."

"But we shouldn't worry," X said. "We've already chased Six enough times today."

"You're right," Two said. "Why chase Six 24/7 when we can have dinner at your house, Seven?"

"Hey, um, boys? I'm not exactly done with this yet. I may need a little help. Could one of you help me out?"

"I will!" said Two. "I remember cooking with Eight a long time ago. What are we making?"

"Vegetable and noodle soup!"

"Sounds delicious! I'm in!"

Two walks over to the kitchen, where Thirteen is.
He begins helping her.

X decided to explore Seven's house.
Seven's bedroom had one of the only comfortable beds around here.

The bathroom. X did his business, washed his hands, and looked in the mirror. His reflection looked fine.

The room to the left.

X went inside. There was an old Algebralien in the bed.
He looked at the window. There was a daisy in a pot on the windowsill.

Seven came in. "Hey, X...
*Sigh* I... Well... Is, uh, everything okay? I... She can't hear us, you know... I... I worry about her...but... Everything is going to be okay, right? Everything is going to be okay..."

"Dinner's ready!!!" Thirteen and Two yelled simultaneously.

"X, come on! Dinner's ready..."

X checked on Seven's grandma. She was breathing steadily.

He left the room and headed to the table.

Vegetable and noodle soup. X tried it.
The soup tasted amazing.

And Two was enjoying it as well.

"This is DELICIOUS! I knew it would taste good!" they said.

Seven seemed to like it.

Seven looked around.
"So... Has anything changed about X?"