~てくる (change over time)
grammar95 sentences
The auxiliary ~てくる attached to a verb te-form, marking a change emerging or developing into the speaker's awareness over time (暑くなってきた 'it's been getting hot', 増えてきた 'has been increasing'), or an ongoing course of action up to the present (ずっと~てきた 'have been V-ing all this time'). Paired with ~ていく for change away from the speaker. Distinct from the motion-only sense of ~てくる ('come carrying / come doing'), which is tagged separately.