にだけ (only to / only at)

The composite particle にだけ (に+だけ), stacking the dative/locative に with the limiting だけ ('only'). Marks the に-element as the exclusive target/location — 'only to X, only at X.' E.g., あなたにだけ話す ('I'll tell only you'), 東京にだけある店 ('a shop that only exists in Tokyo').