I was so happy when i realized that this was a sequel for koi ni nare! I've read it a long time ago
I've read this till chapter 2 here.
https://myreadingmanga.info/yamamoto-ataru-lovely-play-eng/2/
Everything will makes sense in chap 2 i swear
I didn't like chapter 4.
SPOILER ALERT
after he broke up with him and didn't even contact him for a year he just comes back suddenly and takashi forgave him so easily. He should have at least gave Hino a good slap in the face after everything.
There should b more!! This has soo much potential...
Aside from the fact that the seme is a total jerk, I think meeting him also had a good influence on Shinobu. At least now he was able to move on from his past crush and also, he learned his lesson. Shinobu became stronger. What doesn't kill you makes you stronger, right? I'm sure he's going to be better now and think before he falls in love again.