にハマっている

be into

→ に
phrase Rare #34,396
be into Used for being very enthusiastic about a hobby, food, or other interest. It can also mean being hooked on something.
JA: 最近、古い映画にハマっている。
EN: Lately, I’ve been really into old movies.

トムは最近、日本食にハマっている。

Tom has been really into Japanese food lately.

トムは最近、ギターにハマっている。

Tom has been really into the guitar lately.

トムは最近、中華料理にハマっている。

Tom has been really into Chinese food lately.

トムは最近、ドラムにハマっている。

Tom has been really into drums lately.