This came to me while I was reading an HP/PJO fic. I hope you like this, it's. not very organised, lol.. I'm not much of a writer.

Iemitsu and Nana discovered, about a year into their marriage, that Nana was infertile. So, because Iemitsu was successfully convinced by some of his coworkers stories, praying to a god or goddess for assistance would help them.

After an uncharicteristic amount of research and consideration, Nana decided to pray to Hestia (despite her being a Greek virgin goddess), goddess of the hearth and home, because she feels that Hestia would be able to provide for her (hopeful) future child in case anything happens to her and Iemitsu.

When Hestia answers the call curiousy (after all, no one calls upon a virgin goddess for a fertility blessing), she decides to possess Nana so that it would be Her fertility in use, but inside Nana's body, thus giving the child three parents (and still keeping her virgin goddess status). Fortunately, all works out and Tsuna is soon on his way to being popped out by a blissfully happy Nana.

Tsuna, due to Hestia's godly influence, is far more charismatic, considerate, firm, and good at home ec than he would be without Her influence. This results in Tsuna being somewhat unpopular still, because people are drawn in by his Sky Charisma and attempting to showcase their strength via bullying, but he ends up finding solace in cooking with his mother or classmates, and can just as often be found sitting with someone just needing silence. (Hibari Kyoya secretly adopts Tsuna as his 'small fluffy animal' and viciously takes down any bullies).

Due to Hestia having control over fire, Tsuna's instinctive skill with Soul Flames and natural flames are boosted, and they have a habit of going curly wurly inside of him when he meets someone Important (basically the Intuition being a little bit late to the party and getting stronger as Tsuna ages, so when he's a child it only feels curly wurly and noodly inside him instead of Ping! Somethings Up! like it is in older-canon-Tsuna)

Hestia refuses to claim him up to this point because her siblings would smite him and his parents for 'daring to defile Hestia' or some such nonsense, but the monsters have no such trouble sniffing out the firstborn demigod of a powerful, if modest, goddess like Hestia. Nana is still somewhat of an airhead, but is used to dealing with weirdly violent animals and people trying to abduct her Tsu-kun and has no problem taking a rolling pin or skillet to their noggins and calling the police (or DC, when they become a thing).

Tsuna can still be sealed or unsealed by Timoteo at this point, I'm a bit unsure what to do with that plot point since it's Dumb in my opinion.

When Reborn comes along, he's baffled by the extra warmth coming from Tsuna, even for a powerful Sky flame user, and the supposedly Dame student's skill in cooking and odd confidence in dealing with other people when around a fireplace or eating place, despite being a very serious victim of bullying. He's wary of the immediate sense that he can trust Tsuna, so is a bit harsher than he probably should be, but softens up sooner or later into his regular spartan ways.

Hello! This is the first prompt I've put on the internet ever, and if you'd like to adopt this story or cross adopt it onto a different site (AO3 or Wattpad for example) tell me and credit me, and I'll put your username and title here so people can read it! If you'd like to talk about it, pm me and I'll message you when I see it!

Posted on the 11th of February, 2017