Sein spent six months in Esca Underground Metal City.0

During this time, he had conducted a myriad of experiments—not only on Elisa, the mermaid, and Yuri, the female engineer but also on himself.0

After this intensive half-year of experimentation and enhancements, Sein observed significant changes in his capabilities.0

Focus: 180.10

Mana: 191.30

Constitution: 129.40

The notable increase in his focus stemmed from Sein’s relentless pursuit of knowledge over the past six months.1

His mana had grown at a moderate rate.0

However, Sein was somewhat dissatisfied with the progress of his constitution.0

It had reached a plateau even though he had been diligently...0