Ep. 3: Kotaro conducts tests on Chinami while Sonomi observes and feels jealous.

3

Kotaro initiates a series of tests involving Chinami as part of his ongoing research activities. During this process, Sonomi happens to notice the two of them spending time together. Her observation of their interaction triggers feelings of jealousy within her. The narrative focuses on the immediate interpersonal dynamics resulting from this encounter, highlighting Sonomi's emotional reaction to seeing Kotaro and Chinami in close proximity. This sequence of events underscores the developing tension between the characters involved in the study.