Warui Koto Bakkashite Gomennasai

What will happen when a few teens enter into an unexpected drunken state?

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1) Mikado Shirahane x Towa Aikawa's story
2) Ryuuichi Shinonome x Shuuji Yukimura's story
3) Kuon Aikawa x Nanao Shirahane's story
4) Shirou Akagi x Nao Kousaka' story

Reading Order:
Volume number - Title [Pair number - Appearance number]
V.01 - Warui Koto Shitai (I Want To Be Naughty!) [1.1]
V.02 - Warui ko Demo Ii? (I'm a Bad Kid, But That's Okay, Isn't It?) [1.2]
V.03 - Kirai ja nai Kedo (I Don?t Dislike You) [2.1]
V.04 - Koi ja Nai Kedo (It's Not Love) [2.2]
---- Warui Koto Bakkashite Gomennasai [1.3 & 2.3]
V.05 - Warui Yatsu Demo Ii (Is Even a Bad Boy Good?) [1.4]
V.06 - Mujihi na Otoko (Merciless Man) [3.1]
V.07 - Warui Koibito ja Dame? (Can a Bad Boy Be a Lover?) [1.5]
V.08 - Kare ja Nai Kedo (I'm Not Your Boyfriend) [2.4]
---- Warui ko Tachi no Bansan [1.6 & 2.5]
V.09 - Mujihi na Anata (Merciless Lover) [3.2]
V.10 - Sunao ja Nai Kedo (I'm Not Honest) [2.6]
V.11 - Mujihi na Karada (Ruthless Body) [3.3]
V.12 - Warui Ouji Demo Suki (I Love a Prince Even If He Is Naughty) [1.7]
---- Kira-senpai to Kokonoe-kun ~Gekokujou~ [4.0]
V.13 - Shouwaru Ookami ga Koi o Shita Rashii (Wicked Wolf Seems to Be in Love) [4.1]