to develop a relationship with a person

絆を深める, 関係を築く
someone who helps or supports someone else in certain activities or against someone else

味方, 同盟者
a person whom one knows but is not a close friend

知人 (ちじん), 知り合い (しりあい)
someone's best friend, used by young people on social media, especially in text messages

親友永遠 (しんゆうえいえん), ずっと親友 (ずっとしんゆう)
a close friend

親友 (しんゆう), 友達 (ともだち)
a friend

友人 (ゆうじん), 仲間 (なかま)
a person or animal with which one travels or spends a lot of time

仲間 (なかま), 連れ (つれ)
a romantic or sexual partner, especially in a long-term or committed relationship

伴侶(はんりょ), パートナー
a person who shares the responsibilities of raising a child

共同親(きょうどうおや), 副親(ふくおや)
a brother that shares only one biological parent with one

同母兄弟(どうぼきょうだい), 異母兄弟(いぼきょうだい)
a sister that shares only one biological parent with one

異母妹(いぼいもう), 義理の妹(ぎりのいもう)
someone who has the legal right to inherit the property, money, or title of a deceased individual

相続人, 遺産相続者
one's closest living relative or relatives

親族, 近親者
a child whose parents have died

孤児 (こじ), オーファン
someone who shares the same blood with a specific person who lived many years ago

子孫, 後裔
(of a child or parent) related through adoption

養子の, 養子縁組の
representing or involving members of two different races

二人種の, バイレイシャルな
(of two people, particularly in the same family) older

年長の, 兄の
(of people) having a very close relationship

親密な, 密接な
characteristic of a sister or like one

姉妹のような, 姉妹的な
(of a family or group of people) having a strong and friendly relationship with each other

絆の深い, 密接な
the people that a person is descended from

先祖, 系譜
an individual's religious or ethnic background that is passed down to them from their ancestors

遺産 (いさん), 文化的遺産 (ぶんかてきいさん)
a subdivision or a group of members of an extended family sharing the same ancestors

系統(けいとう), 支族(しぞく)
a large group of people who are related to each other

一族 (いぞく), 家族 (かぞく)
the end of a relationship or an association

別れ, 解消
what one receives upon a person's death, such as property, money, etc.

相続 (そうぞく), 遺産 (いさん)
the process of raising or taking care of one's child or children

育児(いくじ), 子育て(こそだて)
strong love and support expressed for a person or thing

献身, 愛情
a close relationship in which there is a good understanding and communication between people

ラポール, 関係性
lasting the whole of a person's life

生涯の, 一生の
to end a relationship that one was romantically involved in, often in a way that is unexpected or unfair

振る (ふる), 捨てる (すてる)
a very friendly and affectionate relationship that two men have with each other, which is not sexual at all

ブラマン, 友愛(ともあい)
a close friend or companion from one's neighborhood or hometown, often sharing a similar background or upbringing

ホームボーイ, 仲間
