We/us — a first-person plural pronoun including the speaker; commonly used by males and can be slightly more neutral or polite than 僕ら.
僕たちは新しいプロジェクトを始めることにした。
We decided to start a new project.
僕たちの教室は三階にあります。
Our classroom is on the third floor.
僕たちで力を合わせれば、できるはずだ。
If we combine our efforts, we should be able to do it.