I think u could make it a little bit more specific. Do u mean the pure family or just a normal kuchi family? For the pure family, u will first need kutchipatchi and marry it to a yonepatchi. for a normal family, u yourself would first need a character that comes from the easy going family or the kuchi family and marry it with another character from the kuchi family. then always train them with the 3rd choice, the easy going toy or the easy going music. And if u want kuchipatchi, u would probably need 80%-100% bonding level. Of course , other bonding levels could do but u couldn't get a kuchipatchi but maybe a kuchi family so..
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thanx!