Mukuchi na Kanojo no Seikantai: Koe wa Dasanai Kedo Karada wa Shoujiki da ne, Zubunure da yo – Chapter 24

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While Akira is thanking Tsukasa, Tsukasa becomes flustered and seemingly almost confesses to her, but they get interrupted.

As we come to learn later in Vol. 26, Tsukasa has a crush on Akira and actually considered stealing her away, but decided not to out of respect for her relationship with the MC.