If you're looking for manga similar to Watashi no Shiranai, Senpai no 100-ko no koto, you might like these titles.
One day, Aoi Amahara, the most famous beauty at his school, shows up at Kento Ikuno's door! Kento is surprised by her sudden visit, but she shows him a "ticket" written with a kid's clumsy handwriting. It is a "do-whatever-you-want" ticket that Kento had made when he was a child! Furthermore, the ticket, which was supposed to be just a piece of paper, turns out to actually have power to compel the other person do whatever the holder asks. However, once the ticket is used, the ownership of the ticket is transferred to the person who completed the request...? This is a love comedy in which a beautiful junior girl with the magical "do-whatever-you-wish ticket" comes on strong to make you do whatever she wants!
Sakuta may have cured Mai’s Adolescence Syndrome in the nick of time, but now he faces a no less harrowing task—convincing her to officially date him. After managing to win that round of verbal fencing, he gets some well-deserved rest...only to wake up “yesterday,” with all his progress reset. This inexplicable phenomenon seems to be centered on Tomoe Koga, and the only cure is to...pretend to be her boyfriend?!
You're loved by such an honest girl, doesn't that make you even the slightest bit happy!? That such a flirty Kouhai would follow you around all the time!? Futahara Touka, a childhood friend's younger sister, and a self proclaimed annoying little devil-type kouhai who enrolled in the same highschool. Apparently, she's also a "Self-proclaimed Senpai-worshipping beauty". And that beautiful little devil kouhai yet again came to pick me up early in the morning. "Senpai! Let's hold hands! Warm me up!" Only I, however, know that she's actually the naive, shy type that blushes just from holding hands, and gets extremely flustered inside while teasing me.. The show she puts on as the little-devil-character is just an act in order to get closer to me. And that she doesn't like me-- yet.
Average company worker Shimono spends his days constantly being helped and scolded by his superior and section chief Kamijou Touka. One day, he finds himself having traveled back in time to his high school years. He sees this as a chance to aggressively approach the section chief a second time around, only to find out that very woman had turned into a girl constantly acting lovey-dovey towards him! Turns out that she also time leaped back in time to the same point as Shimono. She was under the impression that she was the only one who traveled back in time, deciding to act as lovey-dovey and close with Shimono, who she actually had feelings for at the time.
Bunny girls do not live in libraries. This is simply common sense. And yet, that's exactly where Sakuta runs into one in the wild. More bewildering is who the bunny girl is: Mai Sakurajima, an upperclassman and well- known actress currently taking a break from industry work. Wanting to find out more about the mystery surrounding Mai (and maybe get a little closer to her in the process), Sakuta launches an investigation to figure out what's making this bunny girl invisible to everyone around them.
High school second-year Sakagami Sojiro is late for school one day, when he is given a ride by a mysterious girl who looks like a third-year, and claims that her fortunes are 100% accurate. She declares that he is fated to be with a girl younger than him... but little does he know that she's referring to herself! So begins a comedy of love between the fumbling Mizuki-"senpai" and clueless Sakagami!
He looks like a gorilla man, but on the inside Yukio is a decent guy who fell in love with an upperclassman named Akane-san! But is she actually a lesbian who engages in "compensated dating"?!
If a girl teases you, that means she likes you! Unfortunately, Akiteru knows from experience that isn’t the case. Because every girl he interacts with shows him nothing but scorn, and he’s not scored a single date from it! Luckily, he’s more concerned with securing a spot for him and his game-development buddies at his uncle’s business. But when his uncle throws him a condition that involves playing the part of his daughter’s boyfriend, Akiteru has no choice but to take it. What will his best friend’s sister Iroha, who bullies him relentlessly, think of the news?
Famed author Kasumigaoka Utaha had always struggled with her novel series, 'Koisuru Metronome' until she met Tomoyo Aki, her biggest fan who later becomes her personal editor and inspires her to give it a proper conclusion. Now with Tomoyo's passion and Kasumigaoka's determination combined, the two work together with their publisher while also discovering their true feelings and finding parallels between themselves and the characters within Kasumigaoka's novels.