Ashita Niji ga Denakute mo

The manga's story follows gay drag queen Whip, who has a daily routine of idly chatting in a chat app with a user named "Insomniac Salaryman" and listening to their grumbling. Whip develops some light romantic feelings for this person that he has never seen, but dismisses it as a romance that will never happen.

(Source: Anime News Network)

Note: Includes one extra chapter.