A very intresting and well-written game! Easily one of the best visual novel type game in this art style that is above your peers with the value of an being enjoyable story and with gameplay that compliments it well! I am looking forward to your future updates and thank you for your hard work!
I would love to see a more romantic path with Rachel other than/possible alongside the current pet one, a bit more nuanced path just as what you can do with Lucy. (Also looking forward to her update!)
Also her first time/defloration scene falls flat in comparison to others even though it was reasoned on by the protagonist's dialogue, it could probably use a more intimate one if a romantic path is to exist. If the justification for it is only to be used on her then it is disappointing and frankly boring if that applies to every petite maiden in the game. At the very least let the mc do it himself/force herself to him before failing and being lectured/told about it being a bad idea and then proceding to use other implements in her training.
As it currently is, It just makes her character simply as an yes-man object without a will that is only used to progress the overall plot unlike the story developments of Debbie, Cassandra, and Priti wherein the mc helps them into the betterment of themselves with the questionable techniques that is the premise of the game, and then after realising that it worked and helped them, they become thankful, more loving, and approaching towards the mc for him to use as a leverage later on. The context makes it more interesting for it help shows that the character thinks that she had genuinely progressed and growed via the mc intervention not just a bland brainwash even though she is meant to be a submissive and obidient character.
Thank you for your time reading and I hope to see more soon!