Spoiling but since you asked lol. He's only wearing the ring for show. At the end there after he and uke had sex, and uke passed out, he put the ring on uke's finger (which after ditching seme in the room, is why uke was surprised to see it on his finger) I'm not sure if that meant something else but how I see it, that's a way for seme to say "I like you". I consider it a vague but happy ending.
Also type "Lewin patreon" onto google and click on the first option. That'll take you to patreon where the author posts her work, from ep1 to 6. But you'll have to pay 1$ to unlock. The videos loaded on youtube didn't have subs that's why I didn't purchase on there. The vids on patreon has tons of different subs. Choose which you prefer by clicking the cc.
In hyperventilation,why was he wearing a wedding ring?Was it so that girls wouldn't approach him?