@Kronix
@monkey123
@phoenixir It has also been noted that having the cure (or treatment) administered by one of the following character types has shown sometimes remarkable improvements (though side-effects that have been seen include becoming infected with some kind of unnatural/incurable entity, parasite, or disease, a massive lose of capital, or even death). Length of treatment and duration of cure may vary.
Character types: Tsundere/Yandere (if best girl is them), Childhood friend (if best girl is not them), Sister/Sisters (better results shown if not blood related), some kind of royalty (most often the Princess is best girl but the King/Queen/Servants are the ones to administer the treatment), or an Elf/non-human being of some sort (if they are also the MC's slaves, better results happen).