Natsuo Todoroki/Relationships

Enji Todoroki
Natsuo feels a strong animosity towards his father, for his negligence towards him and his siblings who did not inherit a powerful Quirk to surpass All Might, as well as for being the reason that his mother ended up hospitalized, and considering him the principal responsible for the death of his brother Toya. Natsuo mentions that he hardly remembers his father, which means that Enji did not do much in raising him. This animaversion does not allow him to spend much time in the same room as his father.

After Endeavor defeated Hood, getting a scar on his face similar to Shoto's as a result. Enji returned home, founding his children eating dinner. Natsuo, along with Shoto, tensely glared at him and only spoke up about his new scar. When Natsuo moved to leave, Enji stopped him and told his son to speak up. With this, the latter angrily confronted him on everything he's done, even saying he's incapable of change and blames him for the distance between him and Shoto, as well as what happened to Toya. Enji simply remained silent at the rant before calmly stating he will face his past to atone. Natsuo was surprised by this statement and left. Enji spoke with Fuyumi and stated he chose the wrong words with Natsuo.

Months later, Fuyumi organizes a dinner in which he invites Natsuo to eat with his father, brothers and Shoto's companions, Izuku and Katsuki. Out of respect for his sister Natsuo accepts. The tension with Enji remains high, so he is the first to leave. Shortly after leaving dinner, Natsuo is captured by Ending, a criminal who wants Endeavor to kill him. By putting your child in danger, Endeavor freezes because he's traumatized by the look on Natsuo's face. Fortunately, Shoto, Izuku and Katsuki manage to defeat Ending and rescue Natsuo.

Endeavor embraces Natsuo grateful that his son's life is safe. As Natsuo breaks free of Endeavor's grasp, Endeavor confessed that he is regretful for what he did to the family due his negligence and the damage caused accordingly. Natsuo tells his father he doesn't care and declares he is unable to forgive him ,unlike Shoto or Fuyumi. Endeavor responds that he sees Natsuo as kind enough and states that it's okay if Natsuo doesn’t forgive him because he's not looking for it, he just wants to atone for his mistakes.

Crying, Natsuo questions why he has to be the only one to try and proactively change and what exactly will Endeavor do to atone. Later, Enji confesses he will have a new house for him, Fuyumi and their mother, as he realizes that the only thing he can do to help his family to take himself out of the equation.