You gotta read his story to understand a little.
I get Daichi was flirting with his man but he could've just told him to stop didn't have to out my man.
does he have his own manga or are there gonna be further chapters elaborating his reasoning?
nevermind i got it sorry
if you read the main manga you will know that shima was intimidated by daichi, so he probably resorted to the only info he knows about daichi which was given to him by makoto
takeru/shima and tada/makoto stories are in momichupa oppabu osu time
yeah i just finished reading the main manga, the cliffhanger in here is
What's Shimada's problem man???