The blood types of the characters are listed as follows:
1. According to official website's query of Blade of Destroying Soul, Tanjiro of Zaomen, height 176 cm, O blood type, water and sun attributes.
2. Ziziphus jujuba, height 162 cm, type O blood, attribute inflammation, month.
My wife is kind and easy-going. Height 174 cm, blood type a, attribute ray.