There are some good games out there but I don't think any have ever hit the right spots the way Eternum does. That said, you're going down the right path lol. CC is cute, I love CoD as well and it had chapter 9 drop recently. My other go to's are:
Artemis - (Good quality, good writing)
Pale Carnations - (Good writing and quality again but the story is a bit on the dark side at times)
Out of Touch - (Unity but I really like the characters. The story is somewhat outlandish at times, hard to follow for some, but it's written extremely well. It also has a lot of content. I hate when I get sucked into a game only to have it end a couple hours later lol)
My Bully is my Lover and Sicae (I liked the story, though there are a couple translation hiccups here and there. They take place in the same universe which is why I put them together)
There are others as well but some are guilty pleasures I don't just air out in front of anyone