So one thing I know is that everyone loves Marth and I thought "huh, might as well give everyone what they want" so yeah.

"More tea?"
You asked holding the teapot fancily.

Marth nodded in reply "yes please"

You poured the tea.

"Why thank you"
He said before sipping the tea.

Ah, tea party time. A joyous time when you and Marth would sit down on a table with a fancy tea set and drink tea fancily. For fun of course.

Marth handed you a plate of deserts "more desert?"
"Why how thoughtful!" You said in a fancy voice "I would love some, thank you!"

You and Marth continued to play tea party when Ike came into the room.

He sat down on the couch and turned on the TV. (Or television)

You and Marth shared a evil grin.

Marth tackled Ike as held him down.
"Marth! What the-"
"(Y/n), now!"

You rose from behind the couch and opened your hands to reveal ribbons and bows.

Ike broke into a cold sweat.

Lucina found Ike, who had ribbons in his hair, playing tea party with Marth and (y/n). It was a funny sight because Ike was trying to spill tea over Marth.

I have no ideas...