I know it's kinda creepy, but I wanna see where it goes. The older guy knows it's wrong and isn't budging, plus he doesn't seem attracted, and the younger one is super innocent, so there's room for development for the future if you want to go there. The horny young friend is pretty fun as he sees what's happening while the other's don't.
I see a lot of complaints regarding the second couple. I think you'd like them in the Thai LA series. Jinta's a total goofball and Min's a selfless sweetheart. Jinta can also read Madame Noi's, his cat, mind and she's super sassy. I prefer their scenes over the main couple Achi and Karan.
Also, I may be mistaken with the timeline, but Tsuge filling in for another author may have been inspired by the Thai series where Jinta fills in for a promotional video.
I'm a little confused. Is it the same series in Thai or a separate series with the same plot?
Separate series with similar plot. It's a Thai adaption of the manga with the same title name. There are some new characters, but the core ones are still there. Achi/Adachi even finds the wiki page for the Cherry Magic manga when researching his powers.