>>530513174
Anyone that doesn't stand out, doesn't have any presence in the story, doesn't have some deeper intrigue for their character, or doesn't cater to some specific fetish is destined to be forgotten

Best way to be remembered is have a strong story presence
Unfortunately after years they refuse to do anything with her

For a student to be saved from irrelevance they need to get the Airi treatment, unfortunately writers can't care about everyone