Here is a brief Walkthrough for those who don't want to cheat of what I understood about the reasons for failing on certain days, the game will give game over in certain cases, many are saying that it is due to entering in the first 4 days, in reality it is a factor but not the determining one, What happens is that you have to level up the Hypnotic Potency before certain key days, the first key day is the end of the 4th day and the beginning of the 5th, if the Hypnotic Potency is below lv1 while she is still in the Altered Recognition state she regains consciousness and the end of the game follows, on the second key day is when the morning of day 9 arrives and the Hypnotic Potency is below level 2, this brings the end of the game with her in the Horny state, the last key day is when the morning of day 13 arrives and the Hypnotic Potency is below level 3, this ends up giving game over with her regaining control during the insertion scene in the morning. Well, that's what I managed to understand, if I got something wrong you can correct it and I'll update this Walkthrough, have a good game gentlemen .