After ups and downs and lots of deep things went between, now the delinquent Towa Aikawa is a very "deeply involved friend" of the Student Council President, Mikado Shirahane. But when Towa visits Mikado's house for the very first time, Mikado's elder brother thought he was Mikado's sex-friend...
(Source: MU)

Aikawa Kuon and Shirahane Nanao are now officially a couple; but someone from Nanao's past has appeared... Who is that person? and why did Nanao wake up all sweaty the day after meeting him? not to mention, what impact will this incident have on the couple? A lot more steamy action is included in this series than in its prequel.

From Fantasyshrine:

Ever since he had sex with his childhood friend, Shinonome, the uptight Student Body VP, Yukimura, felt he was caught in a whirlwind. He found himself invaded by Shinonome in his own bedroom, in the library,everywhere…! Out of desperation, he found his only defense was to treat Shinonome coldly so he could keep his sanity intact. However, it only pushed Shinonome to go to the extreme…!! Will the head-strong, stubborn VP finally come to terms with his feelings…!?

Sequel of Kirai ja nai kedo

Part of Waruiko series:
- I WANT TO BE NAUGHTY! / Warui Koto Shitai /
- WARUI KOTO BAKKASHITE GOMENNASAI
- KIRAI JA NAI KEDO
- KOI JA NAI KEDO
- MUJIHI NA OTOKO

[from Fantasy Shrine:]
Yukimura is the formidable VP of the student body. However, he has a past which he doesn't want to be discovered. The only person who knows about his secret is his childhood friend, Shinonome, the number-one problem student in the school! How far would Yukimura go to silence Shinonome!?

Sequel to: I WANT TO BE NAUGHTY!

Prequel to: Koi ja nai kedo

Part of Waruiko series:
- I WANT TO BE NAUGHTY! / Warui Koto Shitai /
- WARUI KOTO BAKKASHITE GOMENNASAI
- KIRAI JA NAI KEDO
- KOI JA NAI KEDO
- MUJIHI NA OTOKO

*The series alternates between different sets of pairs. Although it's supposed to be read as a whole, you can skip volumes with the pair(s) you don't like.

Warui _____
Featuring the school delinquent Towa Aikawa and the student council president Mikado Shirahane. (Pair 1)
V. involving this pairing are: V.01, V.02, V.04, V.07, V.11

_____ ja Nai Kedo
Featuring Shuuji Yukimura, the formidable student council vice-president, and the problematic childhood friend, Ryuuichi Shinonome (Towa's friend). (Pair 2)
V. involving this pairing are: V.03, V.05, V.08, V.10, V.?

Mujihi na _____
Featuring Nanao Shirahane (Mikado's older brother), a male siren, and Kuon Aikawa (Towa's older brother), a fellow student attending the same university. (Pair 3)
V. involving this pairing are: V.06, V.09, V.12

Shouwaru Ookami ga Koi o Shita Rashii (Wicked Wolf Seems to Be in Love)
Featuring former student council president, Shirou Akagi (Mikado's rival in Warui Koibito and Warui Oujii) and disciplinary committee member, Nao Kousaka (Yukimura's rival in Sunao ja Nai Kedo). How will those two damaged people find their respective love? (Pair 4)
V. involving this pairing are: V.13

Special chapters:
- Suki Sugite Gomen ne (I'm Sorry That I Love You So Much)
- Warui Koto Bakkashite Gomennasai] (Sorry For Doing Naughty Deeds)
- Neko todo S Nadeshu Nyuu-sama (Cat and His Perverted Owner)
- Osawari de Enryo Negai Masu (Don't Touch Me, Please)
- Warui ko Tachi no Bansan (The Bad Boys' Diner)
- Kira-senpai to Kokonoe-kun - Gekokujou (Kira-senpai and Kokonoe-kun - Junior Dominates Senior)
- Non-fiction

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Title(s) in colors are still being scanlated.

Reading Order (taken from the official website): (Volume number - Title [Pair number - Appearance number])

v01 - Warui Koto Shitai [1-1]
v02 - Warui ko Demo Ii? [1-2]
---- Suki Sugite Gomen ne
v03 - Kirai ja nai Kedo [2-1]
v04 - Warui Otoko Demo Ii? [1-4]
---- Warui Koto Bakkashite Gomennasai [1-3 & 2-3]
---- Neko todo S Nadeshu Nyuu-sama
v05 - Koi Ja nai Kedo [2-2]
v06 - Mujihi na Otoko [3-1]
v07 - Warui Koibito ja Dame? [1-5]
---- Osawari de Enryo Negai Masu
v08 - Kare ja nai kedo [2-4]
---- Warui ko Tachi no Bansan [1-6 & 2-5]
v09 - Mujihi na Anata [3-2]
v10 - Sunao ja nai Kedo [2-6]
v11 - Warui Ouji Demo Suki [1-7]
v12 - Mujihi na Karada [3-3]
---- Kira-senpai to Kokonoe-kun ~Gekokujou~ [4-0]
---- Non-Fiction
v13 - Shouwaru Ookami ga Koi o Shita Rashii [4-1]
v? - Aikawa Ka no Konton Taru Mirai [5-1]
v? - Himitsu ja nai Kedo [2-7]

*Only extra not scanlated.
*On-going.

Because of some bad luck, Aikawa Towa's recent problem is the complicated relationship between the devilish student council president, Shirahane Mikado. Kissing is not the only thing... but is this friendship?! What's more, Mikado started to take a part time job to find relief, but... his bad friends, Shinonome and Yukimura saw their kiss scene...?! Eh?! Will two guys be "lovers"...?!
(Source: Princes)

1. In the End, Love is Your Own Doing
Inuzuka is known as the eccentric prince of the school's chemistry room. His classmates always stayed away from him because they see him as a weirdo. Although one day, class committee member, Akai, is requested by the teacher to "Please get along well" with Inuzuka. However, Inuzuka's interpretation of "Please get along well", turned out to be "Please go out with me" and hence begin the high school love comedy!
2. Kagakushitsu no Ouji (Princes of Chemistry)
The continuation of Inuzuka's and Akai's relationship!
3. Mitsugetsukei Honey
Who is this person that blankly states that he will have Takumi for "takeout"? (Source: Forever More)
4. Younger Man
5. More Impure than Pure
6. I don't just want to be cute!
(Source: MU)

The story of Nanao Shirahane and Kuon Aikawa from Mujihi na Anata continues.
(Source: MU)

Sequel for Warui Koto Shitai

The relationship of our main characters is question by Yukimura Shuji himself wondering what type of relationship he have with his partner Shinonome Ryuichi. Find out what's going to happen by reading Kare ja nai kedo!
(Source: MU)
Also includes Waruikotachi no Bansan.

What on Earth will happen when a few teen's enter into an unexpected drunken state?

Short special including Warui series character plus an extra at the end.

1. Towa X Mikado's Story

2. Yukimura X Shinonome's Story

3) Aikawa Family Extra

Volume 12 of the Warui series focusing on Towa and Mikado.

No synopsis has been added for this manga yet.Click here to update this information.

Despite the content of their relationship, the delinquent Towa Aikawa is still a "friend" of the Student Council President, Mikado Shirahane. But today, Towa gets to sleep-in at Mikado's house for the very first time! Could their relationship advance into "lovers" now...!?
(Source: M-U)

(1-2) Kagami and Fukamachi are two friends who both secretly love each other, but the other doesn't know it. Then one day, Kagami tells Fukamachi that he's in love with his sister- in which Fukamachi then reluctantly decides to introduce his sister to Kagami. Now Kagami is faced with showing Fukamachi how he feels before he's forced to go out with a girl he doesn't love...

(3) Kyouya, a socially awkward college student has trouble smiling and gets bullied at school. What happens when he stumbles into Akira (a high school student) when he's out drinking?

(4) Kyouya (not from chapter 3) is in love with Shirou, his business partner, but Shirou already has a lover?!

~Mangaupdates.com

1) You Are All Mine!- When Tsukasa loses a bet to Hijiri he has to be his slave for three days. But what exactly does he want Tsukasa to do?
2) What is This Thing Called Love?- Hayama just received a love letter from a guy! If only it was from Suzuya-sempai...
3) Impulse- Pretending to be drunk Naoyuki takes advantage of his friend Ikkei. Ikkei shrugs it off the next day, but Naoyuki's not ready to give up.
4) Bias- Naoyuki and Ikkei vacation at a hot spring.
5) Darling- Yuuya lives with his cousin Ryou. Ryou doesn't charge him rent in exchange for his body, but Yuuya wants something more.
6) Machine Gun Talk- Chatty Hibiki and quiet Madoka are childhood friends. But when Hibiki tells Madoka to be nicer to girls and Madoka gets popular, Hibiki gets angry!
7) Sentimental Courtship- Saotome has a crush on Hiragi, but afraid of rejection, all he can do is look. But when Hiragi notices him watching...

Nanao Shirahane is notorious for being a male siren, able to lure in and 'slay' any man simply upon his will. And while these rumors hold no truth, Kuon Aikawa, a fellow student attending the same university, still can’t help believing them and despising Nanao along with it. Warui Series characters, Nanao and Kuon, now star in their own love story!

Can they both survive this disastrous misunderstanding or will Kuon’s hate and Nanao’s unrequited love continue unresolved?

Part of Waruiko series:
- I WANT TO BE NAUGHTY! / Warui Koto Shitai /
- WARUI KOTO BAKKASHITE GOMENNASAI
- KIRAI JA NAI KEDO
- KOI JA NAI KEDO
-MUJIHI NA OTOKO