Warui Yatsu Demo Iiワルイ男でもイイ; 坏男人也没关系; 壞男人也沒關系; 恶作剧系列A3; 惡作劇系列A3; 愛上壞壞的傢伙; 爱上坏坏的家伙; Es incluso un chico malo, bueno? (Spanish); Is even a bad boy, good?; Tendre Voyou 4 (French); Warui Otoko Demo ii?

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...!? List of Warui Series: Vol 1 Warui Koto Shitai [1-1] Vol 2 Waruiko Demo Ii? [1-2] Vol 3 Kirai ja nai Kedo [2-1] Vol 4 Koi Ja nai Kedo [2-2] --- Warui Koto Bakkashite Gomennasai [1-3 &/ 2-3] Vol 5 Warui Yatsu Demo Ii [1-4] Vol 6 Mujihi na Otoko [3-1] Vol 7 Warui Koibito ja Dame? [1-5] Vol 8 Kare ja nai kedo [2-4] Vol 9 Mujihi na Anata [3-2] Vol 10 Sunao ja nai Kedo [2-5]