This is a world where science and magic coexist. Here, some people pursue powerful magic, while others learn eternal truths. The protagonist, Blair, a mathematician who came from a different world, with left-handed magic and right-handed science, opens the door to a new world! Academic Dean? Supreme Witch? Senior Killer Brother? As an adult, I want it all!
High school girls Sara Himekawa, Rin Kohinata, and Yuna Takamori are called “S-class beauties,” admired by everyone for their unparalleled beauty. While the school is abuzz with questions about the mysterious guy that the girls are talking about, Haruya Akasaki, a quiet boy in the class, is feeling anxious. In fact, the subject of the girls\' talk is Haruya! He definitely does not want to draw that much attention at school, so he tries to make the girls lose interest in him, but it all backfires and… This is a school harem comedy between a plain guy and “S-class beauties.\"
He connected just like every time, but strange things started to happen.
A teacher attempts to help her student take care of some swelling.
“I’ve clearly told you—I’m just an ordinary B0-class guide.” With a top-tier dual bloodline ability, Lee Yeoni lives and works in the countryside, keeping his looks and skills a secret. However, due to certain circumstances, he’s reassigned to the capital and becomes entangled with Tae Hajin, an S+ level esper. This sets off an unspoken power struggle between them. Tae Hajin, who is suspicious of Lee Yeoni, senses he’s concealing something and is intent on uncovering the truth. Lee Yeoni tries to thwart Tae Hajin’s efforts to expose him, but it proves challenging. To protect himself, he decides to use Tae Hajin as a shield and takes on the role of his personal guide.
Mao-chan is a cheeky high school girl who loves to tease her virgin big (step)brother in naughty ways. However, her true intention is actually...? (Source: [BookLive](https://booklive.jp/product/index/title_id/20063387/vol_no/001)) --- Note: the original Pixiv series has been collected and published into 2 volumes. Volume 1 (上) \"Up\" contains chapters 1-20. Volume 2 (下) \"Down\" contains chapters 21-42.
