Would you add the “age gap” tag if in the fic a god gets romantically involved with a mortal?

For context.

That mortal makes a contract/pact with God to obtain revenge for all his dead friends; just as God obtains extra help to eliminate a certain group of “creatures” that are affecting the universe. In other words, they have a common enemy.

So, in order to achieve that, God has to take them both to another world.

God cannot interfere in human affairs directly, so he has to change his vessel for a while.

So, he sends their souls to that world and they are both born into mortal bodies.

They retain their memories and abilities (although God can only use his powers partially, unlike the other character who was already mortal in his previous life).

They grow physically at the same rate, despite their differences.

The mortal, counting his previous lives, is barely over 100 years old.

The God is several thousand years old.

In general, I don't add too many tags, but I wonder if it's important to add them, both the Content warnings (for “underage sex” since their first sexual encounter is—physically—during their adolescence) and the additional ones.

I would appreciate hearing your opinion.