"Really?" Ah Man raised her bean-shaped eyebrows, still full of suspicion, but then immediately put on a serious face and said, "Lord, you really don't have to hide it from me. I'll help you keep the secret, and I'll help you figure out a solution too."
If Harano really had that kind of... issue, and healers couldn't heal themselves, she could make an overnight trip to Kyoto, kidnap a Grand Monk from the Ritsu sect to check him out. Maybe, just maybe, they could squeeze out a kid.
If that didn't work either, maybe it was time to consider adopting a daughter and preparing for a son-in-law to inherit the family name—like Ningning for example, just kick Asano Nagasuke out and have her renamed Nohara Ningning.