The emotional apex of the series occurs when Makoto decides to test Erio's assertions directly. He does not yell at her to wake up. He does not mock her alien theories. Instead, he places her in the basket of his bicycle, pedals furiously down a steep seaside hill toward a sea cliff, and launches them both through the open air into the ocean.
The sequence functions as a kinetic rebirth. Plunging into the icy water shatters the protective shell of the delusion while giving Erio the airborne sensation she craved. Falling together confirms that the physical world can produce wonder without requiring supernatural justification. The act demonstrates the core ethos of this coming-of-age anime: helping someone overcome trauma does not require fixing them with harsh logic. It requires proving that reality, despite its disappointments, offers moments worth returning to.