In “My Hero Academia,” there’s a clear clash that dates back to the roots of the story’s main antagonist, All For One, and the powerful ability known as One For All, passed down to our hero, Deku. The conflict traces back to All For One’s sibling, Yoichi Shigaraki.

Yoichi and All For One shared the same beginning but took vastly different paths in the series. Yoichi embraced goodness, while All For One descended into villainy.

Despite his immense strength and influence, All For One harbored deep-seated animosity and selfishness towards Yoichi. He couldn’t shake off his hatred, even though he claimed that his brother hindered his plans, driven by his obsessive nature.

The Dynamic Between All For One and Yoichi in My Hero Academia

All For One and Yoichi shared a womb, but their paths diverged due to their abilities. All For One possessed a Quirk enabling him to absorb others’ powers, which accelerated his strength.

In contrast, Yoichi suffered from constant malnourishment, weakening him, and highlighting their differing mentalities.

In a crucial moment during the final War arc, All For One’s confrontation with Katsuki Bakugo triggered a flashback, revealing his callous disregard for his brother’s well-being.

Despite mistreating Yoichi, All For One, out of a sense of pity, bestowed upon him what would later become the One For All Quirk.

However, Yoichi’s use of this power forms a bond with Kudo, causing All For One’s possessive nature to emerge. He resented Kudo for “taking” his brother, exposing his warped view of Yoichi as a possession.

This resentment fueled his animosity towards Kudo during his clash with Bakugo.

In My Hero Academia manga, an argument stands strong: All For One and Yoichi reign as pivotal figures. The series’ core conflict traces back decades to their origins, with both steadily amassing power, culminating in the climactic showdown between Deku and Tomura Shigaraki.

Their characters mirror their abilities impeccably. All For One’s Quirk revolves around forcibly appropriating powers, contrasting sharply with Yoichi’s One For All, which thrives on the collective experiences of its users. This juxtaposition serves as a profound reflection of their personas, a trait evident since their inception.

All For One’s relentless obsession with Yoichi stems from his inability to dominate him. Thus, his fixation on obtaining One For All symbolizes his quest for victory over his brother, fulfilling his long-standing desire for triumph.