Undertale AU Sibling Oneshots

Flowey x Echo Flower! Reader

(not a request, just a thought I had)
(Low-key kinda sad ngl)
(Edit: messed up the title hhh)

You listened to the gentle trickling of water, staring down into the softly glowing depths.
You remember vividly seeing your siblings, Asriel and Chara, dying from the hands of humans and buttercups. You cried for days, clinging to your mother. Your parents eventually split from the disagreements between them, your mother wanting to protect those that your father swore he'd kill.
It confused you really, so you wandered off for a while. You eventually found your way to Waterfall, watching and listening to the Echo Flowers. They echoed your siblings' voices, of their dreams to see stars. Real stars.
You cried again, wanting nothing more than to see them again. But knowing that was a fruitless wish, you turned to head back home, an Echo Flower in your hands.
It's whisper was quiet, so you lifted it to your ear to hear better.
"Watch out!"
Your eyes widened, just as the loose earth beneath your feet gave way, sending you tumbling into the rapid rivers below with your screams following.
You awoke as an Echo Flower, and a chill in your Soul, crying out for anyone to find.
You found yourself crying again at the memories, your tears dripping down into the water.
You perked up to the sound of a grumbling voice.
"Asriel...?" You voice quivered, that voice had sounded so familiar.
You spotted a buttercup flower, freezing in place at your call.
"(Y/n)...?"
Tears sprung once again in your eyes, watching as the buttercup dove into the earth and popped up again next to you.
"You're... You're a flower too...?"
You nodded. "I came here to clear my head, and I fell into the river..."
"Does mom and dad know...?"
You shook your head this time. "Didn't have the heart to tell them..."
Asriel frowned, sitting with you as the quiet settled. You began to hum to fill it again, and soon enough he joined with you, the cavern echoing with the song of Quiet Waters.

Years later, you and Asriel had stuck together the entire time, eventually staying in the Ruins. Overtime, you both had forgotten your old names, now going by Flowey and Echo.
You both were in the flower patch, just enjoying each other's company, when a figure fell from the skies.
They looked hauntingly familiar...