[Satsuki Imonet] Daisuki na Classmate ni Shikottemorautame no Hamedori Shitemita (COMIC Tenma 2016-04) [English]
Akogare no Classmate ga Nikubenki Datta Ken | The Time My Classmate Crush Was A Cum Sponge
[Nanzaki Iku] Sweet Little Devil (Sweet Little Devil, Yuri Hime Wildrose) [English]
(C85) [Littleollie (Deburasu)] Hime wa Mou 16 Dakara (Outbreak Company)
[Tomi.] Maji Love Brother Chu♥ (Gekkan Web Otoko no Ko-llection! S Vol. 19) [English] [mysterymeat3] [Digital]
(C93) [TEBACO (tama)] Summer holiday, Again. (Little Witch Academia) [English] [/u/scanlations]
[Mikuni Hadzime] Otameshi Lovers | Habitual Lovers (Ki Yuri -Falling in Love with a Classmate-) [English] [Salty Hometown Boys]
[OKAWARI] Bijin na Haha to Tsuyoki na Classmate | 美人繼母和強勢的同學 (Chinese)
Douga Haishin
(C89) [Little★Cosmos (Ayano Rumi)] Shinkon Futeizuma Camilla | Unfaithful Newlywed Camilla (Fire Emblem if) [English]
(SC45) [Circle Ohigetan (Ohigetan)] Ohigebon-07 Classmate Love Note 2 Kame Gekan [English] [H-Konbini]
(C86) [Good Bye Life (Melu)] Datsugoku-shuu Mikoshiba Brothers (Free!)
[Brother Pierrot] Imouto no Naka [English] {doujins.com}
[Shinchara (YO-JIN)] BindLB4 (Little Busters!) [Digital]
(C64) [Cha Cha Cha Brothers, Rupinasu Touzokudan (Yokoyama Chicha)] Tanpopo Jiru 2 Kuroi Tulip (Ashita no Nadja)
[Kagemusha] Arima-kun to 40-nin no Classmate
Takenokoya & M's Works - Brother x Brother (Translated)
(SC60) [Littleollie (Deburasu)] Naimononedari
Otouto no Musume 2 | My Little Brother's Daughter 2
Shrinking Masochism - The Case of a Brother and Sister
[Shinchara (YO-JIN)] BindLB5 (Clannad, Little Busters!) [English] [MintVoid] [Digital]
(C66) [Cha Cha Cha Brothers, Rupinasu Touzokudan (Yokoyama Chicha)] Kijirushi (One Piece)
Fuuji and his Younger Brother Sex Manga
[Brother Pierrot] jk Soap in Shachou Taku (COMIC Shingeki 2012-09)
[MatsuCha. (Maccha)] Matsuno-ka jinan wa kyoudai ga daisuki | The Matsuno Family’s Second Son Loves His Brothers (Osomatsu-san) [English] [Rotti Totti]
Little Little Princess!
(C69) [Anime Brothers (Itsuki Kousuke)] PixelitA 05
(C60) [Cha Cha Cha Brothers, Rupinasu Touzokudan (Yokoyama Chicha)] Ginrei Hon XI (Giant Robo)
(C64) [Cha Cha Cha Brothers, Rupinasu Touzokudan (Yokoyama Chicha)] Tanpopo Jiru 2 Kuroi Tulip | Dandelion Power 2 Black Tulip (Ashita no Nadja) [English] [Copy Of] [Decensored]
(C95) [Littlemare] Tsubasa-chan wa Onii-chan to H ga Shitai!
[Breakrabbit] Little witch love (Little Witch Academia) (English) [Hououin Kyouma]
Chinzurena no Kaku Kimochi Warui Couple | Chinzurena's Nasty Brothers
[Brother Pierrot] Asekkaki no Tenshi-tachi Ch. 3 (COMIC Shingeki 2018-01) [Chinese] [鬼畜王汉化组] [Digital]
(C80) [Little Hamlet, Nymphet (Ra Kii)] Kichiku Ou Reimu - Touhou Koumakyou Kouryakubon -Koumakan Hen- (Touhou Project)
[Shinchara (YO-JIN)] BindLB ss (Little Busters!) [Digital]
[Yanagawa Rio] Otouto de Asobou | Playing With My Little Brother (Toshishita no Otokonoko.) [English]
(C60) [Cha Cha Cha Brothers, Rupinasu Touzokudan (Yokoyama Chicha)] Saotome (Getter Robo)
Otouto ga Aka-chan ni Nacchatta | My Little Brother Has Turned into a Baby
(C80) [Circle Ohigetan (Ohigetan)] Classmate Nyuugaku Shashin 2 Rijichou Sensei to Issho ni Satsuei Kai | Pictures of My Classmates 2 [English] {doujin-moe.us}
More than a little sister, less than a friend? / More than a little sister, less than a bride?
(Kemoket 4) [Flash Point (Various)] PONY Love (My Little Pony Friendship is Magic) [Chinese] [星翼汉化组]
[Akatsuki Myuuto] Lovemare♥ Joshou Classmate Doujin+Ch.1-8 [Digital]
(C66) [Anime BROTHERS (Itsuki Kousuke)] PixelitA 02
[Shinchara (YO-JIN)] BindLB13 (Little Busters!) [Digital]
(C58) [Cha Cha Cha Brothers, Rupinasu Touzokudan (Yokoyama Chicha)] Ginrei Hon IX (Giant Robo)
Nanka Saikin Otouto ga!? | What's Up With My Little Brother Recently...!?
(C81) [Circle Ohigetan (Ohigetan)] Ohigebon-23 Classmate Love Koko Note 4-kkame
[Little mantis (Kuloamaki)] Seku Pure!!!3 ~Sexual Predators~
My Little Brother's That Can't Be This Huge!!
(C93) [Little Hamlet (Kiira)] Miu-chan to Veranda XX
(C88) [Celluloid Brothers (Arisawa Masaharu)] Kandata ni Juurin sareru Onna Souryo (Dragon Quest III)
Majime na Kanojo ga Iru Boku ga, Bitch Kyonyuu no Classmate ni Gyaku NTR Sareru Hanashi | The Story of How I Had A Diligent Girlfriend But Was Stolen by My Slutty Big-Boobed Classmate
(C83) [Little Hamlet (Ra Kii)] KICHIKU MIKO SANAE ToHo Seirensen Kouryakuhon | Touhou Unidentified Fantastic Object Brutal Shrine Maiden Sanae (Touhou Project) [English] [World Three]
[Shinchara (YO-JIN)] BindLB2 (Little Busters!) [Digital]
[Granada Sky (Mogiki Hayami)] Classmate no Ane [Digital]
[Cha Cha Cha Brothers (Yokoyama Chicha)] AKA (Neon Genesis Evangelion) [Digital]
Classmate wa Ore no Yome! 1 - The classmate is my bride!
(C85) [Cha Cha Cha Brothers, Rupinasu Touzokudan (Yokoyama Chicha)] Mori Yuki Dai Koushuu Benjo 2199 (Space Battleship Yamato 2199)
[Brother Pierrot] Bukatsu Shoujo Paradise ~ Asekkaki no Tenshi-tachi ~ Ch.1-3 [English] [biribiri]
[Kamukamu! (Nmasse)] Classmate no Futanarikko [English] {Hennojin} [Digital]
(COMITIA88) [Circle Ohigetan (Ohigetan)] Ohigebon ~Classmate Manko Note 1 Nichime~ [English] [Striborg]
[Parabyo Ya Koneko (Parabyo Koneko)] Ookami-san wa Akazukin-chan o Wakarasetai [Chinese] [瑞树汉化组]
(C76) [Anime BROTHERS (Itsuki Kousuke)] PixelitA 08
(C93) [Littleollie (Deburasu)] Itoshi no Layla-san 2 (THE IDOLM@STER CINDERELLA GIRLS)
[Shinchara (YO-JIN)] Bind LB12 (Little Busters!) [Digital]
Ki Yuri - Falling In Love With A Classmate
(C83) [SENYEN (Yoshida Nami)] Oshikake!! Kudryavka (Little Busters!)
[Hiyori Hamster] Fukujuu no Noroi de Classmate o Onaho-ka Suru Hanashi [Chinese] [Digital]
(C74) [Kaitoushinshidan (Kaishinshi)] Wafuwafuwide (Little Busters!)
(C51) [Cu-little2 (Beti, MAGI)] Cu-Little!! (Various) [English]
[Busukopan (Glico)] No Brother, No Life (Ao no Exorcist) [English] {True Cross}
It's a manga about a little sister sucking on her big brother's penis