If you can buy the product and support the artist:
https://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_511417/

原图下载：https://www.ai2.moe/

Classic BSS

Base +7, Fofotron +25, peligromayor +2, Nobody_Know +9, Nakama_P +6, truthmask +6, lkoofu +10, Gitami +16

So, what is the story here? Sleep guy loves girl and she accepts to fuck with fat guy?

Base +2, peligromayor +2, gradius +6

[Synopsis]

When Chiba Yuta, who fell asleep during class, woke up, he realized that it was already after school, but he couldn't get up right away.
The reason is that right in front of him, his classmate Hiroi Makoto, whom he admires and his long-time friend Kamase Takuya were about to have sex in the style of a King's Game.
While he was wondering whether to get up and stop them, the situation continued to progress...

Base +25, peligromayor +2, hihohahi +31, rikudosennin +6, your_name +6, nuts987 +13

Oh my, those Japanese high schools, so much action happening..........good for them :D

Good stuff........not sure what sort of story we had going on but don't really care, big-tittied high school girl getting banged is all I need to know.......much thanks for all the effort and sharing :)

Base +60, gradius -6, Wilfriback +22

"big-tittied high school girl getting banged is all I need to know" Wise words man! I totally agree. Thank you The Magi-san for the synopsis.

Base +18, your_name +6

I wish it could be longer than this. Our journey is too quick.

Base +6, helseed +7

虽然视角是别人，但这女的应该是喜欢小胖吧

Base +5, helseed +7

完全没有NTR感

Base +8, 736436 -6, lkoofu -10, helseed +7

BSS again, huh? Well, it's a bit shame it's quite short, but I'm going to translate this.
Also, the girl's design, BSS plot, and how his crush was fucked in front of him by a chubby guy... I can't help but to think of this doujin lol
https://e-hentai.org/g/2901333/b63c4574a4/
https://e-hentai.org/g/2945527/5154f1b7b3/

Base +5, DzikriWG +6

According to Fanza website, the original publication was in C105. Thus, this is a digital version of the work.

"※C105にて頒布したものです。"

Base +35, 流萤啾啾 +39, your_name +6, nuts987 +13, Gitami +16