Where To Stream Marriage Toxin Season 1 Episode 1

The highest rank in the assassin industry, the "user," is Gero Hikaru, the next head of the Gero family, the "poison user" family, which possesses top-class power. Living a life in the underworld and avoiding contact with women, marriage is an impossible prospect for him. However, his grandmother, the current head of the family, informs him that in order to prevent the "poison user" bloodline from dying out, his sister Akari must bear an heir. Determined to protect his sister, Gero Hikaru...