Idk... Have you tried Reunion?
A Room Without Window is also good
Antidote
Gale of the god
https://www.mangago.me/read-manga/false_memories_lee_gpiee/
https://www.mangago.me/read-manga/boku_no_naka_ni_kimi_ga_inai/
https://www.mangago.me/read-manga/kimi_ga_inaku_natta_fuyu_no_umi/
https://www.mangago.me/read-manga/trace_of_you/
https://www.mangago.me/read-manga/kowagaranai_de_soba_ni_ite/
Global Examination
Can anyone recommend me yaois that starts with memory lost?