Ekisdaiou
Can you give him the 10 shadows technique with the difference that they invoke sukuna and the other scourges that we saw in jjk?
Kill is needful provided it ethical! If you kill unethical then it's off the charts. You just "need to do, not want to do". Therefore if killing can make the outcome Great! Please do by all means. Don't be like hypocrital liars, villians, heroes, governments, teachers (teachers are just right of communist), etc.