Once you provide the intended meaning, I’d be happy to help you write a clean, appropriate social media post (e.g., for Twitter, Instagram, or a blog).
The protagonist initially tries to entertain her with typical hobbies like video games or shogi, but she shows no interest. In a moment of boredom, Niina suggests they do "something lewd" instead. Despite his initial hesitation regarding her age (she is a student), the protagonist admits she is his type, leading to a series of secret, "naughty" weekends hidden from their parents. Key Details niina no ero youbi shuumatsu wa himitsu ni touc fixed
However, without clearer context or corrected spelling, it’s impossible to produce a meaningful or respectful piece of writing. The inclusion of “ero” (エロ, meaning erotic/sexual content) suggests adult material, but the rest is incoherent. Once you provide the intended meaning, I’d be