Isekai'd Before the Plot

A normal person is isekai'd into a familiar RPG world five years before its story begins, waking as Atreides Pennytree, the third son of a minor noble. Wanting a peaceful, luxurious life, Atreides hires a loyal swordsman to raid a cosmic cult and rescue five experimented children destined to become destroyers. He sends them to a well-funded orphanage, visiting them every now and then. What Atreides doesn't realize is that his intervention will change everything.