Any faster ways to farm some $?

[Jurnova]

So the last trophy I need is to spend 100,000 and was wondering if anyone could let me know the best way to farm money in this game. Online ranked battles seem to give me a very small amount despite ranking up from 5th floor to the 8th floor and ranking up with different characters. Arcade and mission mode barely get me enough to make them viable options so I stopped with them after a good hour or two. If I must stick with arcade mode or just do some online matches until I get enough then I will just go ahead and do that but if anyone knows of a better way that I missed then a nudge in the right direction would be greatly appreciated