Looks to be a parallel piece to I Wish I Had a Childhood Friend Like This. I wasn't quite sure what to use for the SFX, I tried "Shiiiiine" and "Shineeee" to try to mimic the "piaaa" (the extended vowels) but eventually just settled for "*Lights up!*" because it conveyed it a lot more cleanly.

Edit to comment: Messed up hyperlinking the pool due to a typo.
Edit 2: Changed commentary to "Younger Sister" instead of "Young Sister", that was a typo.

ToastyWinds said:

Looks to be a parallel piece to I Wish I Had a Childhood Friend Like This.

They certainly exist in the same universe, they had a minor crossover in the latest post of that pool. I should make a pool for it already.

Unbreakable said:

They certainly exist in the same universe, they had a minor crossover in the latest post of that pool. I should make a pool for it already.

Oh, I didn't notice there were others if there's enough for a pool. I'll go check them out and see if any need translating.