I saw people talking about editing the json files, but didn't see any posted, so I thought people might like to have this.
I made a SaveData edit that unlocks all abilities and customisation options from the start. The character herself is fully clean and inexperienced with no status effects, except for starting at 20% hypnosis progress since otherwise the hypnosis options are locked behind it. All tutorial interruptions are bypassed. Character customisation settings are left at default.
To use, just replace your sav data file found at, "boukensyachan_Steam v1.12\boukensyachan_syokusyuSLG_Data\UserData"
( You might want to copy-paste some spares to manually reset from, since the reset data button in game won't restore this modified sav, just the vanilla defaults.)
Side Tip! If you'd like to keep a reusable personal edit of the in game settings or character customisation, then start by loading this save, customise as you please without beginning any sexual actions, then exit the game and make a backup copy of the save data. You can rename it to something like "SaveData - Brown Hair.sav" and the game will ignore it.