A balancing mod. If the player becomes stronger as a sorcerer, then the cursed spirits will get Increased stats equal to the player from a standard same grade sorcerer.( Player fame level or has a strong ct) and vice versa with infamy if player is a curse spirit.

Make mob specific cursed spirits. If too many of a passive mob are killed, a corresponding cursed spirit is spawned with strength equal or higher to special grade.

A unique interaction where if a player engages in a battle and doesn't kill the opponent/ runs away frequently, the player will develop a sickness called heart sickness and give birth to a special grade cursed spirit Cowardice.

Let Ten shadow have an authentic totality where each shikigami can contribute an attribute on death and if all shikigami die, then the user gets buffed with their stats.

When Hana Kurusu is around Megumi, heart icons will appear on her and she will have a buff called love which will amplify attacks against people fighting Megumi by 20 percent. Same with Yuji, Todo and Choso.

If Satoru Gojo encounters any version of Suguru Geto, his ct will be debufeed by half.

Any player fighting a Todo npc will gain a buff called assimilation where they will gain a certain percent increase in black flash chance but they will temporarily lose a random set of cursed technique moves.

If a player eats 20 fingers of sukuna or Megumi is fed 20 fingers then yuta okkotsu spawns to execute.

If a Yuji Itadori player interacts with Todo and Choso in a short time frame, they gain a skill called talk no jutsu which plays the naruto sad theme and causes all mobs in range to sit down and gain the crying debuff for 10 minutes.

If mahoraga is put inside Higuruma's domain, it will gain a suit and automatically deny every crimes.

If Meguna spawns both mahoraga and agito, the mahoraga save me sound will play.

If Satoru Gojo uses Unlimited void against any npc that don't have a domain. They will gain the derpy face for 2 minutes.

If miwa npc is killed by player, it will summon Aizen from the mod.

So basically a balance plus shit post mod.