This is one of my favorite AVNs. Eternum, My Bully Is My Lover + Sicae (I'd like to consider these two games as one), and Companion of Darkness.
Very solid writing and I could see that the quality of music choice and models have increased over time. I hate and like the cliffhanger of Chapter 8's ending...... I "hate" it because I am dying to witness what's to become of Noel and the MC. I screamed in my bedroom and seconds later my ceiling collapsed, like "WHYYYYY I WANT MOREEEE". I "like" it because it is well-developed!
Arsa, Clara, Rule B, Noel, Nael... almost every character's development was wonderful!
The only two downsides are:
1) there are plenty of typos and grammar errors in dialogues, which sometimes make the gaming experience less enjoyable.
2) Clara's England route ending was quite short. I was expecting some abundant content similar to Emma's solo ending in My Bully Is My Lover. I had minute disappointments, but it's just me.
Lastly, the Moon Chi Easteregg was fantastic! I think I also saw Luna from Eternum...?