The truth is, I have tried making the other decisions that I did not choose the first time and the option is still not eligible. Unless it is an option that required choosing certain specific answers, I don't know.
For the second Scene with Odachi (Otter in Water 2), you need to select TRAINING, If you have over 9 point in DEX, select the option GIVE YOU ALL, with this, you make Odachi Fall in the water and have the Scene that you top him.