I have only recently finished playing thought all 4 endings in one go(literally 10 minutes ago) and oh lord. I didn't one bit expect it to be so emotionally impactful. Of course by reading the game description and warnings I had an idea that it'll be rough, since I also tend to feel as if I upset people or that things are my fault, found the MC very relatable in a lot of ways. The twins personalities and backstory is so well written and I think it comes across subtly enough but noticably once you hear their backstory that how much it links(as it usually does with trauma). I loved how nearly each route you discover something new, a different side to your sweetheart, a detail about their twin, more of their backstory it's just amazing. The endings 3-4 both required for me to take a few minutes afterwards to process everything. 4 literally had me crying. It was such a bittersweet ending, I felt sad for losing contact with them in a way but I was also happy for the MC that they did the thing that is so hard to do and just move on(in my case they forgave).
Besides the story itself the graphics were amazing. I'm totally in love with the character designs, they're both so pretty and the style is just amazing. The CGs somehow always cought me off guard in a way but give the point and the feeling in the scene back so well. The backgrounds are lovely, I honestly love the flowers and especially the lighting. I also think the sound effects were done very well.
Altogether I really enjoyed the game and I'd say it is very impactful, both emotionally and mentally in a way. Despite the slight fantasy element it portrays a very real kind of relationship that I know more people I know and although a lighter version I have gone trough. Having to tiptoe around someones feelings and moods just to ensure their well being is never fun.
Congratulations for the amazing game!! It's very well done and I hope a lot more people will find it who will love it!