OP guy (centuries old but looks 25, good looking) lives out near the forest, almost at the edge of civilisation. He has built a small house, farms, and because his powers so incredible (give him the most OP of them all; telekinesis, telepathy, understanding of languages and concepts, unlimited mana and skill to manipulate it etc), he lives in harmony with nature.
One day, he visits the nearby town, and picks up a ragged orphan girl who was being beaten in an alley (don't ask me how, that's up to the writer). This is the story of the OP man seeing his "daughter" cross the stages of life he had forgotten about with age, come of age, go through education etc.
If possible, I'd like some comedy and some romance on the side for OP too. Thanks!
I have, but the manga doesn't seem to have been updated for a bit. I'm very interested to see what happens after the beast clan and the elves join Tempest (and hopefully the army)
You may be confused with "That time I got reincarnated as a slime". "I've been killing slimes for 300 years and accidentally maxed out my level" is fairly different