No romance overall, theres only one romantic chapter near the end where we see the girl is slowly falling in love, other than that is just she asking something and he giving an answer
The romance only started brewing in the late chapters, then it ended. The manga ended abruptly making it feel like a sex-ed. This manga was cancelled wasn't it.
You really have to love a. mangaka who goes to twitter to give their readers the ending they want us to see instead of what their axed serialization provided