Where beasts run wild, and monsters are real.Darkness hides behind the clean, safe, and orderly facade of society in Akitsushima. In the slum known as the Masquerade, people indulge in a drug called Monster Tonic, which transforms them into animal-human hybrids. There are no laws or restrictions in this government-designated area, and it's rife with immorality, obscenity, and murder. When bodies turn up in the streets, the police don't investigate, so it’s up to Reiji and Getsu to track do...

When high schooler Yuuta Asamura learns his father plans to remarry, he’s not too bothered by the idea…until he finds out his future stepmom has a daughter! Her name is Saki, and to Yuuta’s surprise, she’s a beauty who’s made a reputation for herself as an unapproachable “bad girl.” But as he gets to know her, he realizes she’s not the person everyone says she is. Could he be the one she finally opens her heart to?

FROM STRANGERS TO FAMILYWhen his father remarries, Yuuta Asamura winds up sharing a roof with a brand-new stepsister, who is also the hottest girl in his grade! But Yuuta and his new sister, Saki Ayase, have no delusions—they both carry trauma from their parents’ difficult divorces, and they agree to keep a respectful distance. As it turns out, however, the two have a lot in common, and slowly, cautiously, they grow closer. But is the emotion blooming between them simple admiration, famili...

Ryouran High School is a private arts academy full of geniuses in every field-music, dance, fashion. But in reality, it's looks, not talent, that decide its students' success. My sister, Shika Ikebukuro, is a shut-in who can't do anything without her older brother, and I was sure that devastating lack of charisma would doom her. But I know a secret. Behind her mask, the internet sensation VSINGER is none other than my sister Shika! Her voice is one-of-a-kind, but will it be enough to overc...

Saki and Yuuta have finally found a small group of people who accept their relationship, but big changes are coming for them as they enter their final year of high school. The pair must navigate being in the same class, preparing for college entrance exams, and planning for the future as they approach their new family's first anniversary. They've grown so much closer over the past year, but it may be time to reevaluate that distance.

A month has passed since Yuuta and Saki have become siblings. They agreed to keep a respectful distance from each other, but when Yuuta’s attractive coworker asks him out on a date, Saki finds a strange new emotion welling up in her heart…

WHERE BEASTS RUN WILD, AND MONSTERS ARE REAL.The Masquerade—a place where people can throw off the shackles of society, indulge in the bestial, and revel in freedom and anonymity. Here, the pharmaceutical company Beast Tech distributes Monster Tonic, which transforms people into animal-human hybrids. Amid this violence and immorality, Reiji the vampire boy and Getsu the werewolf earn a meager living as “cleaners,” disposing of the messes people make in this government-designated slum...bod...

Now aware of their feelings, Yuuta and Saki are still unsure whether the affection they have for each other is familial or romantic. To find out, they decide to try deepening the bond between them, unbeknownst to their family and friends. As Halloween approaches, will those secret, uncertain emotions develop into something more…?

WHERE BEASTS RUN WILD, AND MONSTERS ARE REAL.The dangerous imitation tonic hits the market, spreading unprecedented mayhem throughout Natsukibara. Getsu and Reiji have been working hard to track down the mastermind behind the recent series of terrible events. But then, like a punch to the gut, their boss at Fantastic Sweeper orders them to halt their investigation! Though the boys don’t want to comply, there is not much they can do when Beast Tech Headquarters gives the order. However, whe...

It’s Yuuta and Saki’s first summer break as stepsiblings. Now that Saki has gotten a job at the bookstore where Yuuta works, they’ve ended up spending more time together, but she seems really stressed. When she even turns down an invitation to go to the pool with everyone, Yuuta decides to figure out what’s going on and help her relax. In the process, he finds himself thinking of her in ways that a brother shouldn’t…

ROMANCE OVERSEAS? After spending their first New Year’s together, Yuuta and Saki grow even closer. February brings Valentine’s Day, a school trip to Singapore, and, in turn, new encounters and realizations. Yet despite these special events, the pair must maintain a certain distance in order to keep their secret, and so they feel lonely even when together. What will happen when the stepsiblings, who have always kept themselves in check, begin to explore a new, more selfish kind of happiness...

HAPPY BIRTHDAY, YUUTA AND SAKI!Infected by the magic of Halloween night, Yuuta and Saki sought out each other’s warmth. Though their relationship might look the same to those around them, everything is different when they’re alone. As the two spend winter together for the first time, including birthday, Christmas, and New Year’s celebrations, they struggle to balance communication and the joy of surprise. How can they make each other happy, and where are they headed? Are marriage and child...