As someone who finally got all of the endings and codes I BEG you if you update this again give us the choice to select the princess. Spending 5-10 minutes looking for one combination is not fun.
on another note some combinations have too many numbers and some have too few.I'm not sure it's a bug or not.
Ghost Finhead Harvest 1113121 (even double checked it)
Ghost Finhead Skeleton 1069037
Oni Bird Fairy 75850
Oni Bird Human 71299
Oni Kobald Fairy 79550