Only Cheat Engine :)
1. First Open Cheat Engine
2. And then select the proceccer
3. And then go to Ninja saga
4. And then go to shop
5. And then open cheat engine
6. And then type your money
7. And then buy something
8. And then type the current money
9. And then click next scan
10. And then double click the 1st address that appears in there
11. And then move your cursor to the end of that adress in the down that apeared
12. And then double click the value
13. And then type 99999999
14. And then click OK
15. And then press any clothes then enable speed hack and then type 0.0
16. And then press apply
17. And fast click buy 3x only
18. And press disable speed hack
19. And your done
20. Now go and reload and look your inentory