Look sorry. I'm going through some stuff and emotional stuff. I just really really needed to write this. Also technically you can be a yandere gem in houseki no kuni. So I don't wanna hear any comments saying you can't. Warning: small spoliers?

Yandere definition:  is a portmanteau of two Japanese words yanderu, meaning to be sick, and deredere, which is defined as strongly and deeply exhausted, infatuated, moonstruck, head-over-heels, or lovestruck, but in this case used for "lovestruck."

No one's POV:
Phosphophyllite was currently daydreaming about his older senpai known as Y/N. She wasn't the strongest gem nor the weakest. She wasn't the prettiest or smartest.

To Phos however she was the definition of perfection to him. After he went through everything and he changed he learned that he was in love with his senpai.

At first he denied it but after a while he accepted it. Then he got aducted by the moon people and he met the prince aechmea who had talked to Phos.

Phosphophyllite had gotten his way to ask a few gems he wanted to take to the moon with him. His first choice was Y/N but he knew he couldn't ask her first.

He had asked and convinced the other gems he wanted then finally got to his senpai's room. After an hour of talking and convincing her they got to the other and slowly started to leave.

She had fallen back asleep on Phos back and whenever someone offered to hold her he hisses and keeps her close. He didn't want anyone holding what was his.

The others noticed and tried their best not to anger the unstable gem seeing how many times he would crack under pressure. They didn't tell Y/N that he started to act weird around her mainly thinking she could calm him down.

Nobody dared to take Y/N away from him. They knew he would crack and start to crack everyone but they didn't want that. Even the prince knew so he helped Phos on certain things.

Y/N was slightly uncomfortable with the moon people giving her clothes that she didn't like. But after hearing it was for Phos she agrees willingly.

Currently Phos was talking to some of the other gems about random stuff. They didn't always want to take about hurting Kongo sensei.

They enjoyed talking about random stuff at times. Then suddenly phos heard the sound of heels hittingteh floor walking towards them. He looked over and saw Y/N in a dress.

The dress wasn't extremely short considering how it wasn't proper for it to be short. It reached to about the top of her knees and wasn't extremely frilly.

He thought the colors compliment her looks completely. She was a goddess in his eyes. He treated her like one as well. She was slightly embarrassed about the dress and tried to run only for someone to grab her wrist.

It was Phos with his gold arms.

"Wait don't leave you look really nice"

Phos answered innocently while smiling at her. She of course went a bright t/o/g color. She tried to pull away only for Phos to press her against his chest and whisper something to her ear.

"Nobody else can have you and you're mine for eternity"

She didn't know if she should be afriad or charmed at that response. She choose to take it as a compliment.

THAT WAS A BAD IDEA FROM THE START.

She didn't realize that over time he got more and more clingy. To the point where she didn't even have privacy anymore.

After multiple weeks of this she snapped. She yelled at him surprisingly and showing how upset she was for how clingy he was acting. In return he became extremely unstable. He was cracking more often when he thought of his love.

He couldn't bare it that much. Y/N on the other hand was quite satisfied with telling the truth she kept pent up for so long.

What she doesn't know is that Phosphophyllite was about to do something horrible which everyone became afraid of him for doing it.

Should I make more yandere gems? I'm just going through some stuff which I don't feel like talking about at the moment so accept this.
Edit: sorry for publishing this again I just saw a major spelling mistake and it was gonna hurt me to keep it on here without fixing it.

~Ghoulex