Jun is a high school student featured in the "Hero" segment of the Ai Monogatari OAV anthology. He intervenes to rescue pop idol Kaori from a stalker, an act that ignites intense media scrutiny. This incident sparks a romantic relationship between Jun and Kaori. Their bond faces significant strain due to Kaori's pre-existing engagement to a fiancé arranged by her talent agency. Confronted by these external pressures and conflicts stemming from her professional obligations, Jun and Kaori make the decision to run away together. Their attempt to escape triggers a pursuit by the media and Kaori's management. This chase culminates in a confrontation where Jun and Kaori openly declare their commitment to each other.