I empathize with Koichi's views.
I've never agreed with someone so much.
"I hate Fugu." "I feel the same way."
When you have the same feeling as someone else, you have sympathy for them, because you know how they feel. How kind of you!
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.