Episode 11 of "Hoshikuzu Telepath" focuses on the team's efforts to regroup and improve their rocket-building skills, with Matataki's situation taking center stage. The episode begins with Umika reviewing the materials from the last bottle rocket competition. Inspired, she texts Kei, Haruno, and Yu with a plan. The next day, they meet at the airport, where Haruno reveals that she has Matataki's glasses and recounts their last argument.

In the clubroom of Kei's school, Umika and her friends meet Kei's club members, Neon and Michiru. Kei and her team critically examine Umika's rocket and offer tips for improvement. Kei emphasizes the importance of experimentation and learning from various sources. She suggests that they meet with Matataki again after refining their skills.

Umika then uses Kei's club's rocket simulation software to test her rocket and gains valuable insights. Kei invites her to return anytime for further support. Umika is optimistic that she can improve even more with some practice.

Determined to reunite with Matataki, Umika visits her and challenges her to a rocket-building competition under the condition that Matataki listens to them if Umika wins. Umika wins the competition, but Matataki initially reacts dismissively, saying they don't need her anymore. Haruno questions Matataki's choice of a weaker engine, suspecting that she's holding back.

An emotional exchange follows, where Umika acknowledges Matataki's influence on her and expresses her desire to support her in return. Matataki reflects on her past behavior and reluctantly agrees to rejoin the team, apologizing for her actions.

The episode ends with the four friends applying Yu's empathic abilities to Matataki, followed by a lighthearted moment where Umika falls ill from exhaustion after her heartfelt speech.