how

I'm glad I can read Spanish. This got licensed in Spanish. There are 2 volumes and I bought them both.

THERE'S MORE?!

There are 2 volumes (Complete). And I recently bought them both (Licensed in Spanish)

* In Spanish it's called: "Los deseos Obsesivos de mi Chico".

can i please have a spoiler? what's up with the jerky professor messing with him?

I didn't read it yet (￣∇￣") I still need to read my other mangas that I ordered this year. (Got 7 mangas more to read). Also lots of my manga updates here, so didn't had the chance yet. Been busy 2. Will read that 1 after I finish reading my "Hidoku Shinaide Plus+" (A manga full of extra stories) and when there aren't so many updates left 2 read.
It will take a while though. Lots of stuff happening IRL. So will let you know after I read it. (Unless I forgot) Sorry for the long wait.

Okay about your request ~ I just read ch.3 where we get to know about that professor named Anjou Takao ... So read SPOILERS AHEAD for chapter 3 only !!!

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The professor has a trauma when he was younger. He was in love with a sensei and they going out and making out inside the school. But after they doing it the sensei suddenly told him to break up for reasons that he was gonna get married and that he didn't wanna ruin his future. (That's all about his past trauma)

At present time
(I dunno why he choose Satoshi but I think it's because he looks a bit like his sensei),
he blackmailed Satoshi if he doesn't do what he wants he could easily ruin Izumi's future. ('cos he takes part in the exam)
So Satoshi had to endure his selfish request to protect Izumi. Thinking everything would be fine, just have to endure it.
The professor would call him over so to give him blowjobs and let him touch himself in front of him while he watched.
(Izumi thought he was acting not himself lately but couldn't think of any reasons)

1 day he decides to put it in, but before he could do it, Izumi was there at the door (He found out what they up to) and insist him to open the door so to not make a scene.
Since Satoshi had to endure all this he won't hit him, but if happens again he wouldn't think of holding back.

While they gone the professor wished that he didn't gave up on sensei or something like that (I didn't quite get what he said, sorry if wrong)
Anyway Izumi thinks he's not such a bad guy after having seen him being calm and somehow looks resolved (￣∇￣")
Izumi angry after what he did to him how can he be so innocent...

Anjou: "I think so too/My thoughts exactly."...there’s where the professor came in with cake in the hand as an apology O.o Satoshi took the apology 'cos Izumi has confort him a lot so he's fine.
Seeing the enraged Izumi, Anjou said to him not to worry, he wouldn't dare touching him after seeing that Satoshi has been marked all over by Izumi.
Anjou: "I see you've been loved ٩(๑❛ᴗ❛๑)۶"
Satoshi: (⌒▽⌒) "Yes"
Izumi: "Get away from what's mine you old bastard ヽ(`Д´)ﾉ"

Well that's how ch.3 ends.

Ch.4 and ch.5 are another 2 couples story.
And extra is with all 3 couples.

I still surprised that we got it licensed here way before it got translated in english last time i metioned it people were freaking out so much about it that I started to doubt it was the same manga u had lol

LOL. Yeah was surprised too. But I wonder if we ever get to see the final ongoing volume. I wonder what happened to it. Will it ever be a Tankobon?

*This 1 I meant: 3rd Couple next story: http://www.mangago.zone/read-manga/itsuka_kimi_ni_korosareru/