This was such a cool story!! The writing is so poetic and beautiful, the whole victorian vibe is lovely and the art is simply GORGEOUS!!
The mystery of the loop got me super invested (I'm a sucker for time loops xD) and I don't think I've ever seen one with a vampire! I love the duality of how he (not saying the name to avoid spoilers) both loves and yet also resents the MC at times, it's something that would be inevitable being in his situation and it was shown really well!! The detail of not mentioning either of their names until much later, when you start discovering the mysteries little by little, was very unique and creative, I don't think I've seen many stories with that and it was really cool and refreshing to see!
And the fact that this is your first VN, omg!! I can only be amazed, it's a wonderful achievement and everything looks so polished and nice!! Will be looking forward to more of your work, awesome job!! <3