Did Shiesuta finally come back to life in Detective Death?

Shiesuta's light novel The Detective is Dead and its derivative works.

A perfect detective with both talents and looks. The age and real name are unknown, and many parts are shrouded in mystery. As a big detective, he takes protecting the interests of customers as his creed. Together with Junzuka, he fought to the death with "enemies all over the world" and gave his life a year ago.

Related information:

Shiesuta, together with Oshima and Alicia, fought "SPE" in the facilities on the island. ?

After Alicia's death, Zhu gave birth to a slave personality to protect the main personality. At the same time, Zhu added "SPES". ?

Meanwhile, Shiesuta fled the island. However, because Shiesuta was a spare container for seeds, it was hunted by Gexi after fleeing the island. ?

After constant pursuit and escape, Shiesuta's strength was recognized, and later he became a "famous detective" in the regulatory agencies. The task is to crusade against SPE.