Part-time Japanese speaking Nanny

We are a family of two mothers, a 4 year old girl, and a 6 month old boy. We are looking for help with our boy 3 days a week so his mom can go back to work part time. Our girl is being raised bilingually, and we want to same for our boy! We need some help with cooking and cleaning too, but mostly someone to hang out with the boy and occasionally the girl who is in day care full time. Thank you!