7th in the Mame series. Order is:

1: Fifty Fifty
2: Gun no Mame
3: Roy no Mame
4: Roy to Mame
5: Gun to Mame
6: Mame to Mame
7: Mame + Mame
8: Mame to Roy
9: Final Mame Fantasy (extra)
10:Mame No Nichijou