While "Seikou" most commonly refers to the 2013 OVA in this context, the name also appears in other media:
A reserved girl who recently rejected a love confession from a classmate. Unknown to others, she has a secret relationship with a student from a neighboring class, which becomes strained when he demands more than she is comfortable with. Seikou_Ep_01_SUB_ITA.mp4
A more recent OVA project (Winter 2025/26). While "Seikou" most commonly refers to the 2013
A 2022 Japanese tokusatsu web-television series produced by GIGA and ZEN Tokusatsu Media. Seikou_Ep_01_SUB_ITA.mp4