Responses
You’re right, I think it’s quite rare! I could only think of these two examples, second couple in both stories:
https://www.mangago.zone/read-manga/wolf_in_the_house/
https://www.mangago.zone/read-manga/color_collection/
I just remembered At the End of Death also counts https://www.mangago.zone/read-manga/at_the_end_of_death/
The only title I can think of off the top of my head is "Metropolitan Nepenthes".
Seke partially counts, partially.