(aged up, you're both 21)

You and Muichiro were very innocent people, since the age of 14 you worked in the demon slayer corps, that's where you met, and after the final battle (where in this AU no one died) you got married

Since both you and him didn't receive a decent education you had no idea how babies are made, you two thoughts that maybe a few kisses here and there and somehow you would get pregnant, but nothing happened

Muichiro was a bit desperate, he wanted to have a family with you, it was his dream since you two started dating so out of desperation you two went to Shinobu and asked, she found it quite amusing, and started explaining in details how babies are made

As you two left her office you where flustered and embarrassed

"Well... At least we know now.."