冷血旦那様に口づけを = Kiss your cold-blooded husband : 大正かりそめ婚姻譚
れいけつ だんなさま に くちずけ お : たいしょう かりそめ こんいんたん
est. Rough estimate based on volume count, reprints and magazine — not an official figure
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections