The third term has begun, and a new homeroom teacher has been appointed to class 5 and 3 at Takehaya Elementary Schoo...

The monster Matenro, who was supposed to be a fictitious entity, actually appears and steals Hiroshi's precious compu...

Hiroshi and the five of them form the detective team "Hadogumi" to take on Matenro's challenge. However, as they are ...

Hiroshi and his friends suspect that Matenro's true identity is Ochiai Sensei, and begin investigating Ochiai's backg...

Susumu is about to jump off the roof of a building!? Hiroshi and his friends run to the school, worried that she inte...

Today is Hiroshi's classmate Kananari Senkichi's birthday. The five members of the Hadogumi attend a big birthday par...

Susumu witnessed a housewife, a regular customer of her parents' greengrocer, shoplifting from the store. Susumu tell...

Satoru suddenly began to wonder how many suckers there were on the octopus' legs. Then Matenro appears and provokes S...

On the way home from school, Yasuko stopped by the botanical garden with Mr. Ochiai. However, Yasuko is disappointed ...

A videotape was delivered to Hiroshi by Matenro. When they immediately play the tape at the Hadogumi's hideout, they ...

Hiroshi, Yasuko, and Susumu, who found the "path to the future," disappear. Maybe he was kidnapped by Matenro... Whil...

The world of 2007 A.D. ruled by Matenro, where Matenro turns weak humans into robots and feeds only the strong, or ch...

Today, Satoru is on duty to take care of the weapons of the Hadogumi. I had just witnessed Mr. Ochiai making a phone ...

A burglar broke into Senkichi's house. Fortunately, Chikichi was not injured, but Mr. Ochiai takes this incident as a...

Yasuko sees a magic show by Ten-O, a world-renowned magician, and becomes inspired to become a magician. At the schoo...

Hiroshi, who has been playing games at home, realizes that he forgot his homework at school. Hiroshi's father also sc...

At Yasuko's suggestion, the members of the Hadogumi decide to go cycling. One of the goals is to deepen the friendshi...

Hiroshi was popular with the girls at school. The reason for this, according to Hiroshi himself, is that his "transpa...

A series of kidnappings of elementary school students occur. Mr. Ochiai lectures his students on the despicable crime...

The Hadogumi group is in danger due to the mysterious kidnapping group, the Darkness Clan. The Dark Clan's goal was t...

The training camp for the Hadogumi has begun. However, on the morning of the second day, Susumu collapses. Surprising...

Inspector Karikiri and Takeo's father, Shoichiro, were childhood friends. The two meet again for the first time in a ...

Takeo is obsessed with bird watching. He was flapping in the early summer sky, staring at the birds with sparkling ey...

Because Satoru's mother is not feeling well, the restaurant run by Satoru's father has to temporarily close, even tho...

In order to capture Matenro, the special training of the Hadogumi continues. However, Yasuko's special training menu ...

Susumu encounters a flying saucer on her way to the Hakuan's hideout. However, none of his friends believe Susumu's s...

Yasuko receives a call from her classmate Kurumi that her life is being targeted, and goes to the mansion where Kurum...

Susumu's desire to become a ninja escalates day by day. As Susumu continues his solitary training, Iga-ryu ninja Mada...

Summer vacation has arrived. Takeo and Satoru have a disagreement over where the things that Matenro stole are hidden...

Hadogumi continues training to capture Matenro. However, in the middle of the training, the real Matenro appears. Eve...

Mr. Ochiai brags to Hiroshi and his friends about his old "kidameshi." Frustrated, the five members of the Hadogumi d...

Crimes in which young women were slashed in the face were occurring one after another. Ochiai-sensei talks to the mem...

The members of the Hadogumi went camping during their summer vacation. Hiroshi and his friends look back on the days ...

The second semester has begun. However, Hiroshi and Susumu had not finished their summer homework. So Ochiai-sensei o...

A man appears in Hiroshi's neighborhood who drinks nothing but water from morning until night. So, Hiroshi and his fr...

Today is an outdoor class. Usually I do a lot of sketching, but at Mr. Ochiai's suggestion, I decided to do a special...

While jogging in the morning, Satoru happened to see an old gentleman who appeared to be Matenro in disguise. Satoru ...

Susumu falls in love at first sight with a beautiful girl he bumps into in the school hallway. Knowing this, Hiroshi ...

A Western-Chinese priest of Chikurin-ji Temple was appointed as the head priest of the head temple. Hiroshi and his f...

Inspector Karikiri was summoned by the Superintendent General. Just when he thought his hard work had been recognized...

Today is payday for Hiroshi's mother, Hiroko, who works part-time. Hiroko stops by her department store and witnesses...

Hiroshi became Matenro's servant in order to save his mother, Hiroko. When Hiroshi hears from Matenro that his purpos...

A family restaurant opens near the restaurant "Bonbon" run by Satoru's father. Since then, the number of customers ha...

Hiroshi and Yasuko are still good friends. However, Susumu, Satoru, and Takeo also thought about Yasuko in their hear...

One night, Hiroshi went to deliver a letter that had arrived at his house by mistake to the correct address. Then, by...

Susumu can't hide his dissatisfaction when his parents force him to take care of a greengrocer. He announces to Ochia...

Takeo has been acting strange lately. He doesn't even try to participate in the activities of the Hadogumi, although ...

In an unusual move, Satoru summoned the members of the Hadogumi. The reason was that a woman's screams were recorded ...

The closing ceremony of the second semester came early. Mr. Ochiai uses the example of plum blossoms, which can withs...

The final confrontation between the Hadogumi and Matenrou is now upon us. With the help of the Pachinko group, the Ha...