MeowMixMax wow thanks!!^^I will work really hard on that!!^^

The huge damage was a combination of a lot of things.
First my character has been fully reincarnated and had a starting stat of 270 in Int.
Second was leveling to 9999 for the increased stats and huge bonus to armor stats.
Third was getting 255 weapon mastery in staves.
Fourth was getting the most important specialists for damage, a Professional of 100, 25 Rune Knight Lovers, 100 Cryophiles, and 25 Ghost lovers on my Ghost.
Fifth is fully reincarnating your ghost and getting it a base int stat of 270 and fully leveling it to 9999.
Sixth and the most important is perfecting the following 3 items for int, Omniscient Rod, Makai Wars, and 2 Super Robo Suit all with a rarity of 0.

These are the main things, also the reason I use monster Asagi for Magichange 2 is because she gives my Rune Knight +5% in all stats for every male on the field so +35% total.If you have any other questions feel free to ask, I'm sure I missed a lot of things.

I got my Peta spell to 99 using the CoO1 stage, you sit your mage on a +1 attack square and attack an ally over and over with the Peta element spell of your choice. If leveling a fire spell attack a dragon ally, if water attack a slug, if wind attack a wolf, also make sure you have 300 mentors for 4x the skill exp.

how did you got level 99 skill so fast? is it related with armasters? and what about that 200m damage do you have some tips? sorry for the questions haha I just miss 5 achievements and I can't even hit 10million of damage yet

...whoa