Fate/HELP! My sister is Heracles!

News flash! I'm a dude from the 21st century with amnesia, somehow reborn into some baby named Iphicles.
Hmm...sound familiar?

Oh, my sister is named Alcides by the way. Like, the same Alcides as the name Heracles used when he was a kid.
Aaaaaand a massive snake tried to turn us into sausage paste in our cradle.

...What can possibly go wrong?
Wait, is that Lady Hera I see?
Hahaha...I hate my life.

(pre-Celtic Myth Scathach)
(Reversed gender; Big sis Heracles, young brother MC:
In Nasuverse, Iphicles is actually a girl)
(NOT a Self Insert)
(NOT a Harem but with 2 love interests)

ATTENTION: This story would be filled with snark, Percy Jackson vibes, and alien nanomachines of Nasuverse. Capiche? Thank you and enjoy!

OLDER VERSION (unedited version) ALSO ON https://www.fanfiction.net/s/14126521/1/Fate-HELP-My-sister-is-Heracles

(I'm planning on posting the rewritten version daily until I catch up to ff.net, then update MONTHLY on both sites simultaneously)