Despite having found a solution to solve the [Platinum] mission
The most annoying thing for Shane was that he couldn't even enhance Cosmo's quality right now because he might need him to solve the Innate Skill's Upgrade mission!
That was what caused his frustration, and it was as if he wasted way too much time on a simple mission.
Only after one month had passed did Shane finally find a solution and Cosmo had almost caught up with the lightning gazelle in 10 out of 10 tries!
Having superior intelligence compared to his opponent was the main reason for Cosmo to make it almost possible to catch up with the lightning gazelle.
Thus, Shane decided to ease Cosmo's burden by enhancing his quality from [Extraordinary] to [Legendary].