I'm quite astounded no one has made one until now 0__0
And since I'm not sure if there's going to be someone to scanlate this (I know I wouldn't :/ ...) I thought that it would at least be nice to have some summaries.
Based on the Chinese scanlations, so there might be some minor mistakes in it.
Before I start with the summary for v4ch1 there's some words I need to make about the volume 3 extra chapter. I've been searching around, but wasn't able to find it online. So I guess it hasn't been scanlated…? Or am I missing something? Because its content is more or less necessary to understand one remark by Satoru in v4ch1, I decided to first make a (very short) summary for that extra chapter.
In the extra chapter Tamiya and Satoru are the main protagonists again ^^ We see them both at the amusement park, Satoru being very happy that in the end his date with Tamiya wasn't ruined and that they can spend some time alone together. They're riding the Ferris wheel too (and you can take exactly one guess at what they're doing in it :p). Anyway, from above Satoru can see Kagami and Sagara who are just about to enter the Ferris wheel. Both Tamiya and Satoru are wondering how exactly Kagami managed getting Sagara to agree to this XD And they're imagining what the two of them would be doing in their cabin (and their imagination is kind of exaggerated, but not really off either). Tamiya and Satoru are both incredibly happy that everything seemingly went so smoothly between Kagami and Sagara (though for different reasons, haha) and Satoru can't wait to ask Sagara about what exactly happened.
Now for v4ch1.
Even though it has been more than a year since the last chapter of bukiyou was published, in the bukiyou world itself only one day has passed. The chapter starts the morning after the day in the amusement park with Sagara obviously being very startled. Or shaken. But either way, his whole body is trembling. And why is that so…? Because another man went crazy on him-and that in public! And the hickeys Kagami left on him in the Ferris wheel… he only realized about them the next day while washing his face.
In school Sagara is furiously looking for Kagami. Kagami on the other hand calmly asks him what has happened for Sagara to be this angry early in the morning already. Sagara is all "What do you even need to ask for. Yesterday… These…" Kagami, kind of confused, only asks "Yesterday… what about it?" At this point Sagara changes from angry to flustered "Ah, no… nothing. That is… it's just…" and Kagami realizes what exactly is going on. He asks if the hickeys are still there and wants to take a look at them (lol). As a result he gets smacked. And Sagara angrily says "You even dare asking if they're still there! You left them in such an obvious place! What if someone had seen them?! I didn't realize earlier and still left the collar of my shirt open!" Kagami doesn't know what the fuss is about, even if someone had seen them they only would have thought that Sagara had a rather passionate lover…. And Sagara snaps at that remark "I don't want other people to think of me like that! And who is my lover?! WHO?!" Kagami doesn't want to believe that there really is no way for them to be lovers and asks if Sagara could do something like that with a person he didn't like…? And Sagara only says that it was Kagami who forced him and he himself obviously said he didn't want to (Kagami: "… You said so?"). In the end Sagara asks for Kagami to not do something like that again in future.
And at this point a girl comes into the room looking for Kagami. The teacher who's responsible for matters regarding further education (mostly it would be about entering University, but generally also includes all the roads one could take after having finished school) is calling for Kagami. Before Kagami leaves he tells Sagara that after school there would be a meeting of the student council and asks him to tell the others about it. He also adds that there isn't much time left until the election and that they should be doing their best until the very end.
Then Sagara starts thinking… right, their term of office would end with the Winter vacation. Until now he only ever met with Kagami as a part of his work at the student council, they're not in the same class and their future plans differ, too. Also, their family background is really different… And even though Kagami can easily say things like that (flashback of the scene where Kagami told him he loved him), the connection between them is really fragile, after all…
In the next scene Satoru comes looking for Sagara and wants to know what happened the other day. Sagara is kind of taken aback "W.. What do you mean by that?" and then "In the end it was all Tamiya's and your fault, just running off like that. Being left alone with that guy, we had to spend some totally awkward time with each other…!" But Satoru doesn't want to believe that and says that he did see what happened back then and it didn't look like that at all. And Sagara-quite shocked-grabs Satoru and asks him "W- w- what did you see??" Satoru says that he saw them entering the Ferris wheel together (and explains that he saw because that time he and Tamiya happened to be on the Ferris wheel as well). Sagara admits that they rode the Ferris wheel, but it was just to kill time because he couldn't ride anything too fast. Satoru doesn't give up though, he asks him if it was just the two of them on the Ferris wheel it surely must have been quite romantic… And Sagara (completely flustered and his hands covering the place where the hickeys have been left) says "I… I said nothing happened, didn't I… You're really unreasonable, Satoru…!" And Sagara's reaction was so obvious that even Satoru couldn't be fooled by him. He kinda enters his sparkling mode and asks "Eh… what happened? Something must have happened? So that's how it is…" (and chibi-Satoru is all "I wanna know! I wanna know!") Sagara turns the tables and starts questioning Satoru about what happened between him and Tamiya at this point, but their 'discussion' is interrupted by the gossip of the girls in the class room. They're talking about Kagami-one of them has heard that Kagami is planning to attend a University outside the country after graduating. The other girls can't quite believe that… isn't he planning to attend Tokyo University..? But apparently, when Kagami was called over to the counselor this morning someone overheard them discussing about it.
The whole time Sagara is just standing there, listening with quite a shocked expression on his face. Satoru asks him if he's alright. But Sagara only says that those girls are quite troublesome, always spreading rumors like that… though his thoughts are drifting off...
"He wants to study abroad?
I never heard him mention it at all…
but thinking about it...
that he wants to apply for T University I also only know because he mentioned it while talking with that person in the amusement park.
He didn't tell me directly that he wanted to go there…
But if it is like that…
what do I do? Should I… ask him directly…?"
At his home then "But even if I asked him... then what?" No matter if Kagami attends T University or goes to study abroad, his future road is different from Sagara's, so it doesn't really matter if he asked him about it or not… but he just can't calm down (and gets frustrated at himself for being unable to concentrate). He wonders what it is he wants to do, and then thinks that since Kagami told him he was in love with him it should also be Kagami telling him about stuff like that!
Sometime later at school Sagara is staring at Kagami; but when Kagami asks him what it is he denies and says it's nothing. They're currently about to give over their student council duties to their successors, meaning that their work for the student council is over. With this we see Kagami smiling at Sagara "Thanks for all your hard work" and Sagara's heart starts beating =D
Kagami then goes on saying the same to the other members of the student council while Sagara is lost in thought once again… so their work for student council finished just like that… but that also means that in the future there won't be a reason for them to meet anymore… he corrects his own thoughts then, though (No! That's not it… it was Kagami who... towards me…). Kagami then asks Sagara if he can stay for awhile after their meeting because there's something he wants to talk with him about. Sagara thinks that maybe Kagami wants to tell him about after-graduation plans…
But that's not it. lol. Kagami is giving a Christmas party and he's inviting Sagara. There would also be some of his father's work partners and friends. Every year they'd hold their Christmas party at this time (even if it's still some time until Christmas itself) and Kagami is hoping for Sagara to come over this year. But Sagara is reminding him that they are about to have their entrance exams for University and shouldn't spend time on any parties. Kagami says that Sagara even used to work part-time until just some time ago, but Sagara doesn't want to hear about it. That was when there was still some time until the exams, but now they've gotten really close. Aside from that, Sagara doesn't think he'd fit in a party like that. Kagami says that it would be really casual though, no need to worry. And Sagara could also bring his friends with him (he mentions Tamiya and Satoru here… and Sagara makes quite an annoyed face at the mention of Tamiya being his 'friend' lol). Kagami then leans over and asks Sagara to please come and attend this party… there's also something he'd like to talk with him about.
In the end Sagara decides to attend and he also brought Satoru and Tamiya with him. They're on their way to the party and they're all dressed really casually (because Kagami did say it'd be okay like this). Satoru and Tamiya even brought some presents (because this is a party by the student council president, after all). When they reach it's this super luxurious house and they're all a bit shocked XD And their expressions don't get any better upon entering… Kagami is wearing a suit and everything looks really noble, so… How is that supposed to be casual??
End for now. Next chapter will be out on February 7th.