First 33 Kisses (2023)

Both have leads with an odd memory loss but are immune to or helped by the other lead. Both MLs have a scientific study or program that assists/keeps track of memory.

Both are short length series that have hilarious medical reasons for the main characters to kiss a lot : )
In First Kisses the FL needs the kiss of the ML to help with her amnesia and in Love Me in 3 Days the ML needs the kiss of the FL to prevent himself from transforming into someone else. Super ridiculous but they're both short, sweet, and cute, so if you need a quick and quirky little filler series, these two should do.