I'll take care of it
Yes, I'll take care of it.
Vous voulez que je m'en charge ?
Do you want me to take care of it?
Mieux vaut que je m'en charge.
I'd better take care of it.
Okay, I'll take care of it.
Le coupable s'est expliqué, je m'en charge.
The culprit has explained himself; I’ll deal with it.
— Le Tombeau des lucioles (1988)
No, I'll take care of it myself.