“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.
In 20XX, the Love Education Law was enacted. ``Love\'\' has become a mandatory subject in a response to the declining birthrate. Michitaka Sato, a high school student who has given up on romance and works hard on his studies, is on the verge of failing school. When he attends a supplementary class to avoid repeating a grade, Mai Aihara, a beautiful girl who is a problem child, appears as his partner...? Suddenly, he begins to study love alone with the beautiful girl in the three C\'s. Close contact, close quarters, and behind closed doors! Does Aihara-san have a secret...? A love-learning romantic comedy between a beautiful JK girl and a boy.
Neneko is spying on a rival organization\'s assassin, but her true identity is revealed, and the condition for her safety is \"marriage\"!? The world\'s sweetest and most dangerous «Contract Marriage» begins!!
One day, Shio arrives home to find that her mother has gotten remarried and is going on a business trip with her new husband, leaving Shio with her new stepsister Kafka. Being only a day older than Kafka, Shio is concerned that Kafka will try to take the big sister position from her. Kafka, on the other hand, is determined to make Shio, who was her first love, fall for her.