Dictionary / Vocabulary / 同士
どうし · also どし
fellow; mutual; companion; comrade
JLPT N1 common word
男子学生同士が相合傘か、なかなかオツなシチュエーションだな。
Two male school pupils sharing an umbrella? That's quite a queer situation.
「時代はＢＬだよ」「びーえる？」「そう。ボーイズラブ。男の子同士の恋愛を扱った本とかのことだ」
"It's the age of BL!" "Bee el?" "Yup, Boys' Love. Books and such dealing with romance between boys."
彼らは血のつながったいとこ同士だ。
They are cousins by blood.