sending a follow-up LINE message before a reply
Colloquial term used among LINE users for sending another message while still waiting for a response to the previous one. Often carries a slightly impatient or eager nuance.
See also: ＬＩＮＥ
I haven't gotten a reply yet, but I wonder if it's okay to send a follow-up LINE message.
Sending a follow-up LINE message can make the other person feel rushed, so you should be careful.