Hyuga Kagami had naturally considered marriage. After all, neither he nor Rin was young anymore. But because of the "Kekkei Mōra Project," marriage had been continually put on hold.
His "Kekkei Mōra Project" was an immensely vast undertaking.
It involved fields ranging from cultivating clones and raising funds to designing the ritual, developing and refining forbidden techniques, and more. Every single one of these tasks required an enormous amount of effort on its own, let alone the fact that Hyuga Kagami had to coordinate and complete all of them by himself.
Second, the "Kekkei Mōra Project" carried immense risks.
Although Hyuga Kagami had constantly been improving and correcting it, whether the ritual would ultimately succeed remained unknown. So he had subconsciously avoided the subject of marriage, worried that Rin might inexplicably become a widow.
Finally, and most practically, Hyuga Kagami wanted to achieve Kekkei Mōra before marrying and having children.
The reasoning was simple. If he and Rin married and had children now, their child might need an entire lifetime just to reach Six Paths level. But if he achieved Kekkei Mōra before marrying Rin and having children, then their child might be like the sons Kaguya bore—Otsutsuki Hagoromo and Otsutsuki Hamura—and begin at Six Paths level.
Hyuga Kagami actually disliked this sort of bloodline theory, but he respected objective facts even more.
Because in the Ninja World, whether one liked it or accepted it, bloodline theory truly existed.
The descendants of the strong were born with powerful strength. For example, the Sage of Six Paths brothers had naturally possessed Six Paths-level strength once they reached adulthood simply because they were Kaguya's sons.
Indra Ōtsutsuki and Otsutsuki Asura, whose conflict had kept the Ninja World in turmoil for a thousand years, had likewise been born with chakra far surpassing that