たずさtazusaわるwaru
1.

To become actively involved in a specific task or field, contributing one's efforts and skills.

2.

To establish a connection or relationship with a particular matter or area of work, often implying a commitment to its development or success.

3.

To accompany or interact with others in a shared experience, highlighting a collaborative aspect of involvement.

Example:

彼は医学の研究に携わっている。