Hiiii, can you please write Oshi no Ko headcanons about what if Ai had triplets but the last baby is not an reincarnation? Like imagine how cute it would be for Aqua and Ruby who are mentally older than they are taking care of reader! (≧▽≦)
Aquamarine & Ruby Hoshino x gn!Reader; "Our Sibling"
notes; EVERYTHING IS PLATONIC OH MY GOD PLEASE NO INCEST- headcanons vary from character to character!
tw; reader uses gender neutral terms, unedited
wc; 0.3k
When the three Hoshino siblings were merely a few months old, obviously Aqua and Ruby could talk, when they noticed [YourName] doing typical baby things, they realized they were... normal.
It was like some button clicked within and they had a silent mutual agreement to protect their sibling from whatever came their way, because Aqua and Ruby already knew what was going on in the world- little baby [YourName] did not.
As they grew, they did their best to support [YourName], even if it all seemed illogical at times.
They believed [YourName] could do no wrong, even if all three of them were fresh in the world- because there was no old soul in [YourName], the two thought they were innocent as could be.
Ruby and Aqua weren't aware *how* protective they were of you until they were on the set of the first movie Aqua was in.
Someone had pushed you to the ground, on purpose or on accident, and little [YourName] had hid themselves in one of the rooms to cry it out.
Ruby found [YourName], alone, in a dark room, and after some talking, she comforted her sibling before telling Aqua and Aqua pulled out full brat mode.
It was Kana trying to redo her scene, but worse? Because he was trying to figure out who hurt his sibling.
Ai had calmed him down, comforted her third child, and everything seemed to go on with life.
After Ai's death, [YourName] wasn't as lively and every day Aqua swears he's going to bring back your life and revenge Ai.
As [YourName] grew they didn't know exactly what they wanted to do, just knew they wanted to follow in Ruby and Aqua's footsteps to be more like their favorite people.
They went to the same middle school and same high school as Ruby and Aqua- just going into general studies similarly to Aqua.
