Nijikuro Gakuen no Nijichou: Seikatsu Shidou-hen

*Nijiiro Days* follows the daily lives of four high school boys: the hopeless romantic Natsuki Hashiba, the sadist Keiichi Katakura, the playboy Tomoya Matsunaga, and the smart otaku Tsuyoshi Naoe. Even while constantly struggling in their studies, they spend their days goofing around and having romantic misadventures.

On Christmas Eve, however, Natsuki is dumped by his girlfriend. While crying alone, he receives a pack of tissues from a girl wearing a Santa Claus costume, and, in return, gives her the scarf originally meant for his ex-girlfriend. As the holidays end and Natsuki returns to school, he finds out that the girl is named Anna Kobayakawa—who luckily goes to the same school as him! Having fallen in love with Anna, Natsuki aims to get closer to her, despite his friends interfering with his plans.

(Source: MAL Rewrite) 

*Notes:
\- Includes 20 extra chapters.
\- Includes the one-shot "Aru Toshi to Sorekara no Watashitachi."
\- Includes the one-shot "Shinbun-bu no Yoriko-kun."
\- Includes the one-shot "Hitori de Dekiru mon."*

Fed up with being hopelessly single, high schooler Erika makes up a boyfriend to fit in. When her lies start to unravel, her schoolmate Kyoya offers to be her pretend boyfriend—for a price. With no other choice, Erika finds herself at the mercy of a blackhearted prince! But is Kyoya truly as blackhearted as he seems?

*Source: VIZ Media*