The Arts of Love, otherwise known as the Princess' "special" or "sexy skill", can be improved at various points in the story by pleasuring others, being pleasured by others, or pleasuring herself (see Sexual encounters). The maximum level at the end of Part One is 7, if the Princess chooses to initiate Pia's romance, or 6 if not. The current skill level is shown in the special diary, which appears in the Princess' inventory once a single level has been acquired.