"Higashi Yui is a main character in the Japanese manga ""Excuse Me, But The World Will Be Gone For A While"". Yui is a high school student who has a passion for astronomy and dreams of becoming an astronomer in the future. Her character is portrayed as intelligent, serious, and determined.

In the story, Yui is one of the few characters who are aware of the upcoming doomsday event that will cause the destruction of the world. She is determined to find a way to save the planet and its inhabitants. Yui is willing to sacrifice her own safety and comfort to achieve her goal.

Despite her serious personality, Yui also has a soft side. She cares deeply for her friends and is willing to help them in any way she can. Yui is also shown to be compassionate towards strangers and has a strong sense of justice.

Throughout the story, Yui is depicted as a strategic thinker who carefully plans her actions. She is always analyzing situations and considering all possible outcomes before taking any action. Her intelligence and analytical skills are evident in her approach to solving the world's impending doom.

Despite the gravity of the situation, Yui remains optimistic and hopeful. She believes that there is always a solution to any problem and that humanity can overcome any obstacle if they work together. Yui's positivity and determination inspire the other characters in the manga to keep pushing forward in their efforts to save the world.

In conclusion, Higashi Yui is a complex character in the manga ""Excuse Me, But The World Will Be Gone For A While"". Her passion for astronomy, intelligence, seriousness, and determination make her a key player in the effort to save the world from doomsday. Yui's caring nature, strategic thinking, and positive attitude make her a relatable and inspiring character that readers will root for throughout the story."