Lock On!

Lock On! is a shonen manga by Kenta Tsuchida. It's 18 chapters long plus the original one-shot.

The story follows Kurihara Niko, who Does Not Like Men, as she becomes friends with Sanada Utsuru, a Chivalrous Pervert who is a professional photographer at the age of 17. After transferring into Niko's class, Sanada decides to start a photography club with Niko's friend, Yuki. Sanada also has a special power called "Shutter Eye," which he can use to remember everything he sees perfectly.

Tropes used in Lock On! include:

• All Men Are Perverts: Zig-zagged: Most of the guys who show up for a chapter or two end up sexually harassing someone, while Sanada is a Chivalrous Pervert, Yamato is only interested in Yuki, and everyone else is fine.
• Berserk Button: Yamato is very protective of Yuki. Sanada doesn't like to see someone make a girl cry. When he ends up doing it himself, he jumps out a window...
• Blessed with Suck: The day after Sanada uses his eye too much, he goes crazy.
• Chivalrous Pervert: Sanada
• The Ditz: Yuki
• Does Not Like Men: Niko (This is changing)
• Evil Eye/ Mismatched Eyes: Sanada's Shutter Eye is darker than his other one. He uses it to remember anything he sees perfectly and instantly.
• Eyepatch of Power: Sanada uses one to cover his Shutter Eye.
• Face of a Thug: Yamato and his father
• Genki Girl: Matsuri whenever she takes off her glasses.
• Hand Wave: In-universe: Sanada's explanation for all of his abilities is: "I'm a photographer."
• Jerk with a Heart of Gold: Yamato and Ueno
• Les Yay: There seems to be a lot between Niko and Yuki. It's because Niko Does Not Like Men and has a Limited Social Circle.
• Living Lie Detector: Deconstructed with Sanada. His master tells him that his eye prevents him from understanding love.
• Love Epiphany: Niko's last line: "...because even I was able to fall in love with you."
• Love Triangle: Niko/Sanada/Matsuri
• Meganekko: Matsuri
• Older Than They Look: Machiko
• Psychic Nosebleed: Sanada gets it when he uses his Shutter Eye. And whenever he takes pictures of girls.
• Shipper on Deck: Invoked: When Sanada decides he needs to take more pictures of guys, he tries to get Yamato and Yuki together so he'll enjoy getting a picture of Yamato.
• Shrinking Violet: Matsuri
• Teacher-Student Romance: One of Ueno's students has a crush on him. But then he tells her he's not interested. It turns out he was lying, and he decides to wait until she graduates to do anything with her.
• Tsundere: Niko and Yamato
• Vitriolic Best Buds: Sanada and Yamato
• What Is This Thing You Call Love?: Sanada