Not sure where it is in Win7 but for XP it's 'C:Documents and SettingsApplication DataRenPykatawashoujoactual'. This is all your save files. If you can't find that for some reason, the first save is called '1-LT1.save' so you can just do a search for that, if you prefer.

How To Find Renpy Saves

Renpy Save Edit

1. # -*- coding: utf-8 -*-
2. # python2 — for renpy
3. # Created by Anonymous
4. ''Let it loads its modules''
5. sys.path.append(renpypath)
6. import renpy.object
7. import renpy.preferences
8. global persname
9. importcPickleaspickle
10. s = pfl.read().decode('zlib')
11. print('Loaded persistent data into pers variable')
12. def save():
13. global pers
14. withopen(persname,'w+')as pfl:
15. pfl.write(pdata.encode('zlib'))
16. print('Saved persistent data from pers variable')
17. def getargs():
18. parser= argparse.ArgumentParser(description='RenPy pers shell')
19. parser.add_argument('-ren','--renpy-file', required =True,help='RenPy persistent file')
20. parser.add_argument('-gdr','--game-dir', required =True,help='Game dir with RenPy subfolder')
21. returnparser.parse_args()
22. def runipython(*kvargs, **kwargs):
23. for(k,v)in kwargs.items():
24. from IPython import embed
25. global pers
26. pers =None
27. args = getargs()
28. persname = args.renpy_file
29. import_renpy(gdr)
30. runipython(pers = pers, load = load, save = save)
31. if __name__ '__main__':