Domain Expansion (領りょう域いき展てん開かい Ryōiki Tenkai?) is an advanced barrier technique and is considered the pinnacle of jujutsu sorcery. It constructs the user's innate domain inside a barrier infused with their innate cursed technique. Within a domain expansion, the user's cursed techniques are improved and any that are activated are guaranteed to hit

With that information, make up a name for a domain expansion that has to do with mountains and swords
Here are examples of domain expansion names
Jogo - Coffin of the iron mountain
Sukuna - Malevolent Shrine

3 answers

Tsurugi - Majestic Peak of the Sword
I said make the name have to do with mountains and swords
My apologies for misunderstanding your request. Here's a revised domain expansion name that incorporates both mountains and swords:

Yama-Ken - Sword of the Sacred Summit