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Chapter 107 of Kotoyama's hit manga , titled "He’s Mad" (怒ってる…), marks a critical turning point for the protagonist, Ko Yamori. Following a tense period of uncertainty and internal conflict regarding his friendship with Mahiru, Ko finally resolves to take control of his destiny and his mysterious new powers. A Resolution for Friendship

Under the guidance of Nazuna Nanakusa, Ko enters a "training arc" to intentionally trigger and control his transformation. Initially, they believe is the key emotion needed to activate his powers, leading to several humorous attempts to make Ko "mad".

: Nazuna tries various ways to provoke him, but Ko finds it difficult to manufacture genuine rage on command. Chapter 107 of Kotoyama's hit manga , titled

Call of the Night Chapter 107: The Half-Vampire Training Arc Begins

: Fans have affectionately dubbed this Akira's "maid boost". Initially, they believe is the key emotion needed

The chapter opens with Ko reflecting on his complex relationship with his childhood friend, Mahiru. Despite the friction between them—exacerbated by the influence of the mysterious vampire Kiku Hoshimi—Ko decides he wants to reconcile. However, he realizes that to face Mahiru safely, he must first master his "half-vampire" state to prevent himself from going on a berserk rampage during moments of high emotion. The Trigger for Transformation

: Anko Uguisu (the detective) suggests that Nazuna possessing Ko's blood might be the biological anchor or trigger for his unique state. Akira’s Unintentional "Maid Boost" The chapter opens with Ko reflecting on his

Chapter 107 transitions the story from a slice-of-life "night walking" mystery into a more focused narrative where Ko must actively develop his strength. It solidifies the bond between Ko and Nazuna as student and mentor, while simultaneously building tension for the inevitable confrontation with Kiku Hoshimi and Mahiru in the subsequent volumes. [DISC] Yofukashi no Uta - Chapter 107