I use that online save editor often. Mostly I just cheat money because I hate having to grind in a game where there's no story or anything just tits, or it takes way way to long to get anywhere because you're expected to start at 1 in all stats and grind for exp to raise skills and once those skills hit a certain plateau you can actually raise your stats ONE fucking point but still not enough to actually be useful..... And the dev has hidden the stats so deep in the variables you'll never find them to tinker with them,,,, oh wait, oh nvm.
If you're feeling particularly saucy, downloade A.X.E. and old school hex editor, break out the extra special calculator function on your phone and do some some hex editing on your save file.... But Neechan's option above is your best bet,,, unless you're a masochist and just enjoy the pain.