Umika Konohoshi is a first-year high school student who dreams of meeting an alien. On her first day at school, she is surprised to meet a classmate, Yu Akeuchi, who claims to be an alien! Umika is curious about Yu and is very nervous, but she is too shy to talk to her. But Yu has a special alien ability called 'Forehead-pathy', which allows her to sense Umika’s feelings. Umika wants to get to know Yu better. She decides that she wants to exp...

Umika wants to go to the universe and Yu wants to go back to the universe. They both have the same dream: to go to the universe! To achieve this, Umika tries to build a rocket, but the difficulty of it suddenly causes her to feel frustrated. While Umika is depressed, Yu is still doing everything at her own pace. They catch the attention of their classmate and vice-class president, Haruno Takaragi. Umika desperately tries to cover it up so tha...

Umika and her team's plastic bottle rocket is gradually increasing its range, but the road to the universe is endlessly long. Umika is worried that she lacks knowledge and everything else, but she has an idea about an excellent mechanic. That person is her classmate Matataki Raimon, who is not coming to school. Determined, Umika and her friends go to see her. However, Matataki's attitude is unfriendly and Umika is unable to say anything. It i...

For the sake of "something she wants to convey", Umika gathers up her courage and challenges Matataki to a plastic bottle rocket competition. Haruno guides Umika and Yu to a secret base where memories of her grandfather lie. From that day on, it becomes the secret base for the three of them, and they immediately hold a strategy meeting there. The next day, they go shopping for tools. When they finish shopping, they decide to go out and have f...

Umika and her friends are happy that Matataki has started coming to the high school. Their homeroom teacher, Emihara-sensei, is particularly delighted. As the next step, Umika and her friends want to build a solid-fuel rocket, but the problem is the cost. Matataki plans to set up a club to get the money. She manages to get the application form from Emihara-sensei, and Matataki is relaxed about her future high school life, but tomorrow, Umika and

Umika is excited to be the president of the rocket research club starting today. Umika, Yu, Haruno and Matataki are excitedly waiting for the results of the club's application. However, the report from Emihara-sensei says that they cannot set up a club, but only an association. Furthermore, the budget they can get is zero and the advisor is Emihara. Umika encourages the disappointed Matataki. Everyone is happy to see Umika's growth. They imme...

Since meeting Kei Akizuki, the club president of the previous year's winning school at the Model Rocket Championships, Umika's admiration for Kei has only grown. Umika is determined to become a leader like Kei and declares her aim to win this year's championship. The Rocket Research Association's next goal is set, and everyone renews their commitment. They prepare for the championships, including acquiring a license for model rockets. However, Um

Umika and her team conducted a series of launch tests in preparation for the model rocket championships. They design model rockets while enjoying even their failures and overcoming their final examinations. During the summer holidays, Umika and her friends work hard to build a model rocket at their secret base. However, it doesn't go well and Matataki can't hide her frustration. Umika is depressed after a series of failures. The four of them seem

The model rocket championship has begun. Umika meets Kei again and she is very nervous. And as for the model rocket launched by Umika and her team… 模型火箭选手锦标赛开始了。与彗重逢，让海果的紧张感有增无减。而海果她们发射的模型火箭则是……

The second semester has started. Umika shows up cheerfully, making Haruno and Emihara-sensei feel relieved, who were worried about her. She is also happy to receive support from her classmates. However, only Matataki is absent from school and can not be contacted. Umika decides to face up to her terrible self and move on. Haruno is still too timid to meet Matataki, but Umika and Yu cheer her up. Haruno, who knows the pain of having someone’s ...

Umika, Yu, and Haruno are given a tour of Kei's club activities in her high school. There, the three are stimulated by the high-level model rocket production site. They have a desire to learn more so as not to put all the burden only on Matataki. After that, Umika… 海果、幽、遥乃到彗的高中参观社团活动。高水准的模型火箭制作现场刺激了她们3人。这都是因为她们希望不再让瞬独自负担，想要更加更努力学习。

After a rocket match, Umika collapses with a fever. Yu, Haruno and Matataki go to visit her at her home. Umika, who is suffering from a fever, begs for a 'Forehead-pathy', which surprises Yu. Matataki resumes going to school, and the four of them are together again at the secret base. Towards a new goal, the rocket research club makes a fresh start. Yu’s heart can’t stop beating as she sees Umika's positive attitude towards talking to her cla...