The sky was a bright shade of blue on the first day of university and Ritsuki Ban hopes for a fresh start. As mysterious past regrets continue to linger in his mind, Ritsuki collides into a man who takes on an immediate interest in Ritsuki’s looks— a man whom he later discovers, is one of his new professors! The confident Professor Takagi does nothing to hide his feelings towards Ritsuki; however the reclusive Ritsuki refuses to become teacher’s pet. As Ritsuki and Takagi find themselves sky gazing together one day, they are moved by each others expressions and begin to find out more about each other.

English version via Renta!

A red thread that entwines their fate thicker than blood, deeper than destiny.

The Jinkishi, who keeps the demons (youki) sealed in the Capital has died and his magic has dissipated. Hayato has come from Tokyo to the Capital to claim the seat of the Jinkishi. However it's the blood of the Shihoudou family that inherits this power, and the possessor, Jin, has no interest or desire in the Jinkishi. As the story unfolds they are chained together by the red spell of fate.

From Batoto:

The unstoppable force meets the immovable object! The world's brattiest princess is engaged to a prince just as childish. Will they figure out who's the worse brat before one or both are assassinated by political rivals? Read on!