blood is thicker than water

Proverb

idiomatic

(family, idiomatic) Family relations and loyalties are stronger than relationships with people who are not family members.

Japanese Meaning

家族関係や忠誠心は、血縁を持たない人との関係よりも強いという意味。

友達が困ったときに彼を見捨てた後、姉は家族の絆が他の人間関係よりも強いことを示して彼のそばに残った。

Sense（1）

(family, idiomatic) Family relations and loyalties are stronger than relationships with people who are not family members.

It seems as though you had come to be so very near to us; and blood is thicker than water, is it not? If cousins are not friends, who can be?