Haré is the main protagonist of the anime and manga series. He is a young boy who lives with his mother, Weda, in a small village located deep within a jungle. Initially ten years old at the start of the story, Haré is characterized by his generally patient and sweet-natured disposition. His name, which means "fair weather," stands in stark contrast to the chaos that often surrounds him.

Haré’s defining role in the story is that of the primary straight man, or tsukkomi, constantly reacting to the bizarre and surreal events that unfold around him. He is portrayed as being more mature and responsible than his age would suggest, largely due to his mother's chronic laziness and irresponsibility, which forces him to handle most of the household chores and look after her. Despite his frustrations, he holds a deep love and gratitude for his mother for raising him on her own.

The central conflict and source of most of his anxiety is Guu, a mysterious girl his mother brings home. Haré is the only character who is fully aware of Guu's unnatural and reality-warping abilities, and he is frequently driven to frantic rants or tantrums whenever she defies the laws of physics or logic. These outbursts are often accompanied by a sudden downpour of rain. Guu delights in psychoanalyzing him and taking advantage of his neurotic tendencies, which only contributes to his stress.

In terms of key relationships, Haré has a competitive and often antagonistic relationship with Dr. Clive, his biological father, whom he formally refers to as the "school doctor" due to their decade of estrangement and clashing personalities. He also shows a jealous and possessive streak when it comes to his mother, becoming worried about any male character trying to win her over. Haré is friendly with a girl from his school named Marie, who has a crush on him, and the two eventually marry. He also spends time with other jungle inhabitants, including his lazy teacher Reiji and various village elders.

Regarding his development, Haré is shown to have a tendency to overthink situations, a trait Guu exploits for her amusement. Despite the torment, Guu's antics often serve to teach Haré a lesson about his personal problems and help him grow. At the end of the manga series, six years after Guu disappears, Haré has become a teacher at the village school. He marries Marie, and they have a daughter, whose face bears Guu’s trademark smirk, much to his alarm.

Haré does not possess supernatural powers like Guu. His notable abilities are more practical, such as being a skilled hunter and performing household tasks. He is also depicted as a serious video game enthusiast who owns nearly every console. Due to his repeated trips inside Guu’s stomach, he has gained the ability to understand foreign languages.