Issei Minagi is an important character from "Slow Loop." He is Koharu Minagi's biological father and became Hiyori Minagi's stepfather after marrying Hinata Minagi. After losing his wife Yuuko and son Natsuki in a traffic accident, Issei raised Koharu by himself. He works hard and sometimes worries too much about both Koharu and Hiyori. Although not skilled at cooking, he enjoys taking Koharu out to try cute and trendy foods. Issei cares deeply for his family and tries his best to protect them, but this can sometimes make him seem a bit overprotective. He values his daughters' independence, feels grateful for the bonds they share, and grows as a father by learning to trust his children more. Issei's gentle and caring nature leaves a strong impression on the people around him.
Issei Minagi is described as a gentle-looking adult man. He gives off a kind and calm vibe.
Issei is quiet, gentle, and caring.
He has a soft heart, which can make him overprotective, especially after losing his first wife and son in an accident.
He worries a lot about the safety of Koharu and Hiyori.
He is also a bit sensitive and can feel left out when his daughters spend time together.
Issei can get emotional and sometimes expresses his worries in a funny or cute way.
He finds comfort in family moments and truly values close bonds.
Issei Minagi raised Koharu on his own after the loss of his wife Yuuko and son Natsuki in a traffic accident.
He worked long hours and often left Koharu alone before remarrying.
He later married Hinata Minagi after being introduced by Reiko Yoshinaga (mother of Koi Yoshinaga).
Through this marriage, he became a stepfather to Hiyori Minagi, building a new and blended family.
Issei is not good at cooking and depended on Koharu for meals before his remarriage.
After marrying Hinata, it turned out that both Hinata and Hiyori also struggle with cooking, so Koharu continues to cook for the family.
Issei is Koharu’s real father and deeply cares for her.
He becomes Hiyori’s stepfather and tries to bond with her, worrying for her and Koharu equally.
He respects Ryouta Yoshinaga (Koi's father), who admires Issei for raising Koharu alone.
With Hinata Minagi, his second wife, he sometimes feels left out when she sides with the children, but they make up quickly.
His relationship with his family grows closer as he learns to trust and rely on them.
Issei loves cute and trendy foods, often taking Koharu out to fun places to try new treats.
He feels disappointed when the best-looking dish is always served to Koharu first.
He is so protective that he worries even about camping tents not having locks.
He does not wear a wedding ring, even though he has one.
He once joked about returning to his family home, saying “I’m going back to my parents’ house,” when he felt left out.
His father said the Minagi family has a habit of running away from home, something both Issei and Koharu have done.
“I’m not only worried about Koharu, but I care about you too, Hiyori. So please, take care of each other and be safe on your trip.”
Becoming a Family Again
After Yuuko and Natsuki died, Issei raised Koharu on his own.
He worked late hours and couldn’t always be home, but he tried to make up for it by taking Koharu out to popular dessert shops and cute cafés whenever he could.
Later, he met Hinata Minagi and they married, bringing Hiyori Minagi into their family.
Overprotective Worries
Because he lost his first family, Issei became very protective.
When Koharu and Hiyori wanted to go fishing and camping together, he was very worried, especially since Koharu once got sick on a fishing trip.
He worried about things like tents not having locks and did not let the girls go out alone at first.
The Girls’ Independent Adventure
One day, Koharu ran away from home after Issei said no to her camping trip.
She joined Hiyori in making a secret plan.
When found, Issei talked seriously to both girls, sharing his concerns but eventually agreeing to let them go camping, as long as they looked out for each other.
Making Up After Arguments
After Koharu left home, Issei actually felt proud that she could speak her mind for once.
He thanked Hiyori for helping Koharu express her feelings.
When Hinata took the girls’ side and joined them, Issei felt left out and jokingly threatened to go back to his own parents.
He later cried while drinking with his older brother, feeling both sad and proud.
When Hinata, Koharu, and Hiyori made a special meal with fish they caught themselves, Issei was very touched.
After this, the family apologized to each other, making their bonds stronger.
Growing Trust and Family Love
Issei worries about being a good dad because of raising Koharu alone, but Ryouta Yoshinaga assures him that he has done a great job.
Eventually, as a sign of trust and happiness, he is moved to tears when Hiyori calls him “Dad” for the first time.
Although Hiyori gets embarrassed and refuses to say it again, Issei cherishes the moment.
Koharu’s cheerful and cute personality clearly comes from him, making them a lovable father-daughter pair.
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