When Krolia comes back to the main Blade of Marmora headquarters to report back to Kolivan, she realizes that it's Galra heat season. The scent of Kolivan and Antok’s rut triggers her heat and the three of them spend their heat/ruts together.
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When Krolia arrived back at the main Blade of Marmora headquarters to report her findings to Kolivan, she sensed that something was going on. No one was around; it was the scent of-

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This chapter will eventually be posted on my ao3 account