It looks like I have some perverted attraction to ancient charage For my next read I picked up a 2003 one - Tenohira o, Taiyou ni. (After figuring out how to hook it - in this case AGTH is the only way)
It seems to have pretty good ratings on EGS, with the average score of 80. So far, it looks promising.
Initial setup (MC getting reunited with his estranged childhood friends) seems a bit similar to the Amber Quartz I've finished recently, but this is much older title. I was about to say that I feel some Yume Miru Kusuri vibes as well, but this title is also few years older than YMK. Let's just say that one of the MC's classmates looks like a prototype for YMK's Antoinette. Truly horrible person. Initial apatethic state of protagonist also reminds me of YMK a bit.
I'm really curious where will it all go.
BTW - I said that Amber Quartz looks unpopular with 370 votes on EGS. Certainly it isn't much when compared with top titles. But then, out of curiosity, I checked out EGS page for Princess Evangile. Only 208 votes (and 2411 on VNDB, definitely thanks to translation). That shocked me a bit.