I'm looking for stories where the main character takes a kid under his wing.
I think you have a problem here....as most of the stories the kid is the main character with side kicks... good luck..
Depends on much more specifics about what he is looking for.
Do the genders of the MC and the kid matter. Is he looking specifically for an older man mentoring a younger man.
Would a man/girl combination be okay?
No sex?
Kinks?
Plenty of stories here with an older male dominant taking a youngish female submissive under his wing.
'17th Birthday' by Smokindriver starts out that way when the experienced salesman takes the MC under his wing and teaches him to do sales. But that is just a small portion of the story.
https://storiesonline.net/s/75804/17th-birthday
Selena in 'Arlene and Jeff'.
Much of oyster50's oeuvre, including John and Laura in 'Hurricane, Laura'.
AJ
not sure just what you're looking for . If its adventure ,not porn nosex of any kind beteen MC s Look up the 'Needles and Dwelaney" series of stories by Todd172 . Individual stories on SOL or spring for the booby the same title on amazon.
for stories where the main character takes a kid under his wing
'The Raptor' by Pixy VI. Or is that a little too literal...LOL... It's not finished yet though.
I'm looking for stories where the main character takes a kid under his wing.
Gina Marie Wylie's Tangent & Cost of Time.
https://storiesonline.net/s/50382/tangent
https://storiesonline.net/s/52820/cost-of-time