I tried putting more effort into the typesetting and making sentences flow better. I'm a bit too old to be the kouhai.
I see, original works can be Doujinshis too, the difference with a manga is whether it's self-published or not.

thats one hell of a expression at page 12, it looks so weird.

Base +6, Salesmany +7, Noret +6, C.E. +6, Science Fiction +6, MechWarriorNY +9, adfgrtgsdfgsfd +6

Hand it over. That thing, your high quality protein.

Base +6, blararag +6, Protazy +4, Adidir +6, Nitramy +6, shuntensatsu +15, KingOfWonderland +6, as102 +11, Darudado +6, pluckyp +6, StratoSquir +6, silex s2 +6, Ownerer +6, and 14 more...

ONE HUNDRED SEVENTY-FIVE CENTIMETERS TALL TRACK AND FIELD GIRL REALLY WANTS TO DRINK HER KOUHAI SEMEN
LEST FUCKING GOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
⣿⣿⣿⣿⡿⠟⠛⠛⠛⠛⠉⠉⠙⠛⠛⠿⢿⣿⣿⣿⣿⣿⣿⣿⣿⡿⠿⠟⠀⠀
⣿⣿⣯⣥⣤⣶⣶⣶⣶⣿⣿⣿⣿⣿⣿⣷⣾⣿⣿⣿⣿⣿⣿⣿⣏⣀⣀⣀⡀⠀
⣿⣿⣿⣿⣿⣿⣿⡿⠿⠛⠛⠻⠿⠟⠉⠉⠉⢻⣿⣿⣿⡿⠟⠋⣡⣼⣿⣿⣿⡄
⣿⣿⣿⣟⣭⣤⣶⣶⣿⣿⠃⠀⠀⢀⣀⣤⣶⣿⣿⣿⣿⡅⡀⢀⣩⣤⣤⠀⠀⠀
⣿⣿⣿⣿⣿⣿⣛⡛⠛⠛⠛⢋⣩⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣛⠛⠛⠓⠠⠀⠀
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣦⣤⣤⣤⣦⠀
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠿⠿⠿⠿⠿⢿⡿⢿⣿⣿⣿⠃
⠿⠿⠿⠿⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣥⣄⣀⣀⠀⠀⠀⠀⠀⢰⣾⣿⣿⠏⠀
⠀⠀⠀⠀⠀⠀⠉⣩⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣶⣤⣜⡻⠋⠀⠀⠀
⣰⣾⣷⣶⣿⣾⣖⣻⣿⣿⡿⣿⣿⣿⣿⠿⠿⠟⠛⠛⠛⠋⠉⠉⢉⡽⠃⠀⠀⠀
⣿⣿⣿⣿⣿⣿⡉⠉⠉⠛⠛⠛⠉⠁⠀⠀⠀⠀⠀⠀⠀⠀⡤⠚⠉⠀⠀⠀⠀⠀
⠛⠛⣿⣿⣿⣿⣿⣿⣿⠉⠛⢶⣶⣄⠀⠀⠀⠀⠀⠀⠀⠀⡇⠀⠀⠀⠀⠀⠀⠀
⠠⣾⣿⣿⣿⣿⣿⠿⠟⠃⠀⠀⠀⠈⠲⣴⣦⣤⣤⣤⣶⡾⠁⠀⠀⠀⠀⠀⠀⠀
⠄⠈⠉⠻⢿⣿⣿⡀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠛⠛⠛⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀

Base +14, spirtohleb +8, blararag +6, Teh_Red_Guy +11, Protazy +4, Nitramy +6, Hideaki Anno -7, shuntensatsu +15, asdfghfd +7, Lakota +7, arck2012 +6, smoothoperator -6, viniccius36 +5, and 47 more...

P R O T E I N

Base +12, shuntensatsu +15, bigscuba +6, as102 +11, Kairu_Hakubi +6, MechWarriorNY +9, Entei Nevermore +6, Shinryu-Rex +11, adfgrtgsdfgsfd +6, xoril +7, alllifeinfate +6, DesuEx +8

Everything a growing girl needs for them gainz.

Base +17, bigscuba +6, wapfel +6, as102 +11, shuntensatsu +15, MechWarriorNY +9, Entei Nevermore +6, Shinryu-Rex +11, alllifeinfate +6, Ariovelz +6, DesuEx +8

The girl also consume his "protein" with her other "mouth", to help her relax and rest better , for better run times of course.

Base +16, bigscuba +6, as102 +11, Science Fiction +6, Entei Nevermore +6, hennojin -6

I can't even download the torrent because the file name is too enormous.

Base +6, nyugvo6 +7, gotdajuice +5

thanks for translating.

Base +6, shuntensatsu +15, MechWarriorNY +9

PROTEEEYYYN

Base +6

Any day Maruta is uploaded is a good day.

Base +14, shuntensatsu +16

The question still remains - does it really help?

Base +6

Page 12...Let me drink it AGAIN.....Indicates previous experience. Is there a prequel or prior chapter where delivers for the first time?

Base +6