Didn't understand myself.
I have sphere 1 (purple), sphere 2 (yellow), sphere 3 (red) and I have done the Lamia fight. Hard enough too remember cause I went through it several times due to the annoying states. Pretty sure that I picked up the sphere after the fight.
Now my only save is near the final room and I can't go out of the temple to check cause this slut nun keep saying that she must take care of *** (don't want to spoil).
I guess my only choice is to use a save maker to make it appear in my inventory.
I missed something somewhere ... bad luck.
But I won't go for another round, this game doesn't not worth it (don't wan't to offend anyone) cause
Too many "random encounters" (ok you walk like 3 cm and then bim)
Too few different equipments
Only two characters
Ugly censorship (still don't get the utility of this)
Only a few pictures per cg, not even an animated one ...
Was a pleasant way of spending a few hours.
Thanks for your reply anyway.