1. chikyoudai   foster brother   stepbrother   foster sister   godfather   Hint Half-n-half Clue   2. gishi   son-in-law   stepmother   godson   sister-in-law   Half-n-half Clue   3. youshi   sister-in-law   stepdaughter   father-in-law   foster son   Half-n-half Clue   4. mamakyoudai   stepbrother   sister-in-law   stepsister   foster father   Half-n-half Clue   5. nadukemusume   daughter-in-law   foster son   parents-in-law   goddaughter   Half-n-half Clue   6. youfu   foster daughter   foster parents   foster father   great-grandson   Half-n-half Clue   7. mamashimai   stepsister   goddaughter   great-grandparents   foster son   Half-n-half Clue