23 Creation in Mondaiji-tachi

Have you guys read the novel or manga "The Hidden Dungeon Only I Can Enter"? If you have, you'll get my idea without even needing an explanation. For those of you who haven't, I'll be explaining in a bit.

Creation is an ability which allows the user to create a skill, using LP, which can be restored by things like lust, eating delicious food, or gaining and spending money. The stronger the skill, the more LP it costs. I'll include Editing as part of the package, which allows the user to edit both their own and others' skills, at the cost of more LP.

I think we can equate Skills to Gifts, in this context, meaning the MC will have the ability to give himself more abilities, or edit already existing ones. Perhaps at some point in time, he'll begin to alter others Gifts.

As for plot, maybe it could be either reincarnation or inserted. Both could work, it'd just be a difference in learning how to use it. The reincarnation would immediately know what to do, but the insert would have to figure out his ability as time goes along. If those two don't strike your fancy, there is transmigration, which would also be similar to reincarnation, in that he most likely wouldn't need to learn for long.