Okan

The appearance is of a cow person with curly hair like an aunt's perm on the top of the head, wearing an apron with "Okan" written on it. According to the 62nd head, the family home is three houses away from the Arakawa family, primarily a livestock farmer with a focus on dairy cows and a few chickens. It's said that you can reach it quickly by going down the river flowing through the property.

Hiromu Arakawa's biological mother. Executive director of the Arakawa Farm. When Hiromu Arakawa wanted to escape helping during the busy farming season, she revealed that she had reached the busy farming season while pregnant with Hiromu and "rode the tractor until labor pains started," effectively silencing Hiromu's objections. (Later, it was heard that she drove herself to the hospital after labor pains started and gave birth easily, describing it as a smooth delivery.)

She is also admired for her multitasking abilities, managing farm work, livestock care, accounting and sales for the Arakawa Farm, caring for Grandpa, and even her hobby of gardening, all alongside household chores and childcare. However, Okan counters by saying, "It's not that I can do everything, it's that I'm made to do everything!"

After quitting dairy farming, her skin improved, she found time to play, and she is now challenging herself with growing various vegetables.