Hiroshi is a soft-spoken and rather timid young man. On a school like Totsuki where it's all loud flaunting and thoughtless challenging, a guy like Hiroshi tends to fade into the background rather easily. He does not seem to mind this however, as Hiroshi rarely makes any significant attempts to get people's attention. He dislikes conflict and tries to avoid it as good as he can. Instead, Hiroshi tries to meet everyone he encounters with courtesy.

Whoever does end up in an actual conversation with Hiroshi is usually quick to note that Hiroshi is incredibly friendly and helpful. Many of the people who are closer to Hiroshi greatly value his gentle and caring nature. Hiroshi is deeply empathetic and very attentive towards the people around him. He is always ready to hold out a helping hand to whoever is in need of it, even if they might have not even explicitly asked for it. Because Hiroshi is actually really good at reading people. He is often quick to notice whether someone he's close to is sad or upset, even with people that try to hide what they feel. Hiroshi also has a good understanding on how to approach people and offer them any kind off solace without making them uncomfortable.

He cares a great deal about other's well-being. When it comes to Hiroshi's own well-being however, Hiroshi is a lot more reclusive. Hiroshi fears it would be incredibly bothersome for others to deal with whatever problems or worries he is having. So in order to avoid that, Hiroshi hides any signs of sadness from others and also keeps whatever anxiety-ridden thoughts that are plaguing him behind closed doors. People going out of their way to help him out tends to result in Hiroshi feeling guilty and pressured to live up to their helpfulness. He would want to pay it back somehow, even if he himself would never ask for that whenever it's the other way around.

As someone with a tendency to get nervous rather easily, Hiroshi does not like to be thrown in very tense situations. He can be intimidated rather quickly. This tends to be a bit of a problem on a school like Totsuki. While part of him can't help but to admire them for their strength and bravery, Hiroshi often also worries for his much more challenge-enthusiastic friends who get caught up in battle after battle. Having grown rather doubtful of his own abilities over the years, Totsuki's more brutal challenges can often result in Hiroshi panicking. When not ignored, he is therefore often meet with either scorn or pity by the students of Totsuki. Many have the mindset that a persona like him can not survive for too long in Totsuki's warzone-like enviroment and brush Hiroshi off as someone destined to fail at some point. It does not help that Hiroshi usually sticks around his much more bold and fiery cousin, who tends to unknowingly overshadow him as well. Due to his lack of confidence, Hiroshi usually lets others take the forefront. He quickly disappears behind his cooking partners and while he does his very best in assisting them, he barely brings himself into it at all.

Despite all that however, people should not underestimate the endurance and commitment that Hiroshi really has. Because despite all sleepless nights that Hiroshi suffers because of his worries and despite everyone else's doubts, the one thing that Hiroshi does not do is to simply give up. He does stick to an aim to make it through Totsuki (without seriously troubling anyone in the process).

Hiroshi is highly valued by the people he is close to and does not even really know that himself. His endeavours in helping are usually very much appreciated and almost all of Polar Star would agree that he has a certain power to connect people as well, as it was basically Hiroshi who got the 115th Generation members of Polar Star Dormitory to befriend each other. He may often act as a voice of reason, but is still fun to be around. Hiroshi is a lot more talented than what many like to believe or what he himself believes at the moment. A few people take note of that and are determinded to bring that potential of his out for everyone to see.

Cooking-Style

Hiroshi's care for others also shows in the food he makes. Following his mother's culinary philosophy, Hiroshi's cooking prioritizes the individual customer before all else. Being mindful of likes, dislikes and whatever else might be on the customer's mind, Hiroshi aims to make anyone feel better with his cooking in some way and his dishes are described to have a very comforting effect on whoever eats them. Hiroshi does not want to score with any fancy impressions via visual appeal or expensive ingredients, he goes straight for a person's heart.

Hiroshi is most proficient in the area of Japanese cuisine but does also have a fair share of understanding for Italian cuisine as well thanks to his father's side of the family. This can lead to small fusion elements in his dishes.

Given the fact that he is from a port town, Hiroshi prefers to work with fish and seafood. As an avid gardener, he also very much enjoys to put all the vegetables he has grown to use.

Childhood

Hiroshi grew up in the Tohoku-region, in the small port village where his mother originates from to be exact. He spent his childhood in a very loving community and was raised by two very dedicated parents. For the rare instances that both of them were away he usually was taken care of by his grandmother. From a rather young age on, he often spent his time either helping out in his mother's Ryokan or fishing with the local fishermen. Thanks to Isami having a very deep bond to his twin-brother, Hiroshi was able to grow close to his uncle, aunt and specifically his cousin as well despite them living in a different nation.

Pre-"Shokugeki no Hiraku/Kimiko"

Like most, Hiroshi enrolled into Totsuki at the age of 12 joining it's first year of middle school divison and becoming a member of the 115th Generation. He joined Polar Star Dormitory and notably was the first one out of the future 115th Gen dormmembers to pass Polar Star's entrance exam. Somewhere along the lines he also joined Local Cuisine RS. A year later his cousin Mika Aldini joined the school.

"Shokugeki no Kimiko"

Hiroshi gets introduced in Chapter 3, where he, like all students, returns to Totsuki after the holidays to attend the first year of highschool. Kimiko Yukihira gets to meet him in Madoka Enomoto's cooking class where the two team up and present an excellent piece of work to the teacher. The two later meet again at Polar Star Dormitory, where they find out about being in the same dorm together.

While getting worried about hearing Kimiko is having a Shokugeki already so soon since she enrolled into the academy, he still comes along to watch and support. He's also around when it gets in front of a huge crowd that Hiraku and Kimiko are in fact siblings. The next day, he asks Kimiko about her well-being when gardening.

As every highschool first year has to, Hiroshi attends the Trainings Camp and ends up in Rui Kumai's class on first day together with Kimiko and Mika. He teams up with Mika and the two put out a green dish for Rui's challenge to use yellow and/or blue ingredients. Their work greatly impresses the rest, including Kimiko.

As every highschool first year has to, Hiroshi attends the Trainings Camp and ends up in Rui Kumai's class on first day together with Kimiko and Mika. He teams up with Mika and the two put out a green dish for Rui's challenge to use yellow and/or blue ingredients. Their work greatly impresses the rest, including Kimiko.

Hiroshi goes on to pass all of the Training Camp's Challenges and completes it with the rest of his dormmates by the end. Back on Totsuki, after the holidays, when the chosen participants for the Autumn Election Premlins get revealed, Hiroshi is not among them.