This word uses the on'yomi reading for the first kanji and the kun'yomi reading for the second kanji. You've learned them both already, so you should be able to read this too!
I'm sincerely happy that Koichi's incurable disease actually has been cured.
I think Koichi hates me from the bottom of his heart.
There are a lot of nice people in my new department and I feel tremendously relieved.