どうかん同感doukan
1.

A shared understanding or acknowledgment of feelings and thoughts that aligns with another person's perspective.

2.

The experience of resonating with someone's views or emotions, reflecting a sense of unity in thought or sentiment.

3.

The act of expressing alignment with someone's feelings or thoughts, indicating a mutual agreement or empathy towards their situation.

4.

A profound connection to someone else's emotional state, resulting in a deep-seated sense of agreement or shared sentiment.

5.

The condition of perceiving or interpreting situations similarly to another individual, fostering a sense of camaraderie or solidarity in viewpoints.

Example:

全く同感です。