The translation is dog shit. You can barely tell what's going on, and the lovers being intimate is very awkwardly censored. It's like they want to take you out of the story and actively want you to pay attention to the censored bits. It's stupid and I don't get it, there's ways to make censored scenes like this good without making the art so goddamn awkward. The plot could have been really interesting, but it's actually very bland and mostly forgotten in favor of focusing on the main couple's relationship and the weird censored bits. A non human.... app? text box thing? Whatever, a non human thing is made to become a human in order to prevent the main character of a story from basically losing his humanity and becoming a murderer. I guess. The method is to make sure MC's little brother doesn't get accidentally murdered during a kidnapping. The non-human immediately is human, like there is no adaption period, nothing is awkward, he is human and has no problems comprehending and processing emotions and complex human social behavior. He is inexplicably good at fighting and has no fear of any bullies or gangsters. Not that those are threatening in the first place seeing as our mc is just strong. For no reason. I don't think the human he was installed in was all that strong, but apparently???
The art is good, but bad at depicting action, which is probably why we don't get any of those scenes. Everything is very surface level and nothing is very well explored. This had potential, but it's not executed well at all. Don't recommend it, there's far better yaoi AND shounen-ai on this site. Shame about the premise though.
The Protagonist Only Thinks About Falling In Love