Real or fictional.
You can turn this ability on and off.
You'll still have the skills and/or abilities even if they return to life.
You can summon any slime and share their abilities and powers. Yes, that includes Rimura Tempest.
You have the ability to drain the life force from one person and either keep it for yourself or give it some some one else.
This works on the following math, using time as a easy to follow metric
Drain 1 minute of someones lifeforce, get 30 seconds added to your own or 15 seconds if you give it to someone elses.
Rules:
1 Any lifeforce drained you must either use it yourself or pass it on as you are draining it.
2 The persons being drained or given the life force must be within 3m of you and you must be able to see both of transfering
3 You cannot get or make anyone younger but drained lifeforce will repair damage at a cellular level
How would you use this power and where to avoid detection and becoming a govt. Asset?