 If you liked
Ojisan wa Kawaii Mono ga Osuki.
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 ...then you might like
Why Did Men Stop Wearing High Heels?
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Men who have a desire (wearing high heels or collecting cute stuff) they don't want to show to others in public due to fear of being judged as it isn't exactly normal in everyone's eyes for an adult man, so they execute their actions in secret, as it gives them joy and satisfaction.