Takayuki Tōdō serves as vice-captain of Nishi High School's boys' tennis club and stands among its most skilled players. He commands respect as student council president. His significance emerges through steadfast support for protagonist Hiromi Oka, encouraging her during early bullying incidents and grueling training sessions on the tennis team.

Romantic feelings for Hiromi become central to his narrative, facing direct opposition when Coach Jin Munakata forbids their relationship to prioritize tennis training. Despite this directive causing emotional turmoil—particularly for Hiromi—Tōdō persists in supporting her.

His resilience fractures upon learning of Coach Munakata's death during a U.S. tournament, triggering a breakdown that costs him his match. Alongside teammates Ranko Midorikawa and Ozaki, he temporarily conceals the coach's death from Hiromi to safeguard her focus in competition.

As Hiromi's tennis commitment deepens, their romance evolves toward profound friendship. Earlier installments highlight mutual attraction, while the *Ace o Nerae! Final Stage* OVAs resolve lingering tension through mutual confessions.

Frequently seen alongside close friends—including boys' tennis captain Yuu Ozaki and Takashi Chiba—his group dynamic reinforces his established role within the school's social fabric.