The Three Great Jujutsu Families have passed down their legacies for over a thousand years, since the Heian period. Everyone knows the Zenin and Gojo families have a long history of grudges and tangled conflicts. Their worst feud even ended with both clan heads killing each other.
The jujutsu world: Those two families are sworn enemies!
But...
Kamo: I object! Don't believe rumors, and don't spread them!
Fake sworn enemies: You trip me up, I stir up trouble. We fight each other and both suffer.
Real sworn enemies: Get your clan head out of here! Our clan head can't marry a man or marry into another family!
While everyone from the elders to the clansmen on both sides is happily at each other's throats, they keep finding their own clan head holding hands with the one from the other side?!
Looking at the two clan heads acting so intimately...
Gojo/Zenin clansmen: So all those years of fighting were for nothing. :D
A corner of the Kamo estate:
"Grandpa, I read in some unofficial histories that the other two families often arranged marriages with each other. Is that true?"
"Shh..."
(Heian period) A great onmyoji: "I was there to witness their relationship."
(Edo period) The eldest son: "I can testify. They took me in when they first started dating."
(Taisho period) Demon Slayer Corps: "The two of them have such a wonderful relationship!"
(Modern day) The youngest daughter: "I'm the brightest third wheel in the family."
The rest of the Gojo and Zenin families: That's slander!!!
P.S.:
1. OOC warning. The story contains many original details and made-up background elements.
2. Jujutsu characters only appear through the Shibuya Incident, and other series are represented only by their anime versions.
3. This novel is also known as Kamo Wants to Be Relevant Too (not really).
4. May include: a boy whose organs were stolen by a demon god, Demon Slayer, the chief aide of Hell, a girl who is a goddess and her fox, a ten-thousand-year-old elementary school student, and more.
Theme: Rebellious clan heads bravely pursue love.
