Prequel
83The second instalment of the Saikyou Series. Aiming for 10,000 metres depth in the deep sea! Together with the genius psychologist Jikumoto Miyori, Aikawa Jun—a contractor—heads to the bottom of the sea in pursuit of a missing treasure ship and research team. As soon as they arrive, they are besieged by a school of man-eating fish! (Source: Kodansha, translated)
Sequel
The fourth instalment of the Saikyou Series. Aikawa Jun, Humanity's Strongest Contractor. This time, she's been asked to protect the fortune teller's child, Himena Genki, from the "death" she predicted. What is the strongest way to change the future? An adventure story about falling in love with "nonsense", loving "humans", and being thrilled by "the strongest" comes to a close! (Source: Kodansha, translated)