I succeeded in changing time played using fluzzy search. It turns out that time is a Dword variable and stored in a ratio of 1000:1s. For instance, 2,000,000,000 equals to a displayed time of 555:33:20. It also worked on IOS (speaking of IOS, all values are, as far as I see, ordered in the same way as that of Androids).
This could help prevent you from being reported cheating to the staffs in kairosoft, as I know that there are a few players that can help others to report players who might have cheated.`