Yes. That is right. Otokitchi's and Ojitchi's mate and they will have baby boys, and that baby will soon turn into an Oyajitchi. Don't worry. Oyajitchi is just a very rare charecter you get when an Ojitchi and an Otokitchi mate. Did you find a Ojitchi to mate with? Because if you did, that is just very normal. No need to worry. The matchmaker can still come. Congrats on getting a very rare charecter!