I love the Demo and can't wait to see how it is expanded upon. The way you wrote Thaumo is a very interesting and unique way to perpetuate the Male Yandere trope. I would also like to say that I LOVE Themo (both artistically and personality-wise) and really hope that they are going to be a pursuable love interest when (or if) the Female Yandere selection becomes available.
However, I cannot stress this enough, DO NOT RUSH OR OVERWORK YOURSELF WHEN CREATING THIS! It always breaks my heart to see artists and writers stress themselves out over their work because of feeling the need to please their fans as quick as possible, take your time and make sure to take regular breaks and focus on your own health (after all, us writers have a reputation for having a questionable mental health), so make sure you are happy and prioritise yourself before your work, we want what is best for you, even if that means the VN will take longer to release.
Stay safe and take care! <3
Edit: Holy shit! Did not know you worked in vascular surgery, take as long as you need to, that work environment must be stressful and excruciating!