noun, noun or participle which takes 'suru', intransitive verb
be absorbed in; be enthusiastic about; be devoted to
Describes being deeply engaged in an activity or interest, often to the point of losing track of time. Used with に to mark the object of enthusiasm.
彼は最近、ゲームに熱中している。
He's been absorbed in video games lately.
子供の頃は昆
When I was a child, I was devoted to collecting insects.