For the "Boyfriend AI" trope:
* "My Girlfriend is a Shobitch" (Bokura no Hanashi) by Kouhei Kadono: This story features a young man who develops an AI companion based on a popular "shobitch" (sexy girl) character in a virtual reality game.
* "Robotics;Notes" by Nitroplus: This manga features a group of high school students working on a robot to compete in a robotics competition. It has a bit more focus on science and the complexities of AI, but still explores the idea of robots and human relationships.
* "A.I.C.O. -Incarnation-" (A.I.C.O. -Incarnation-): This manga follows a young girl who gains special powers after an accident involving an experimental AI. The relationship between humans and AI is a central theme.
For the "Fake Relationship" aspect:
* "Skip Beat!" by Yoshiki Nakamura: A young woman pretends to be a man to get into the entertainment industry and ends up entangled with a popular actor. While the focus is on the entertainment industry, it has a similar dynamic to "Absolute Boyfriend" in terms of fake relationships and the developing feelings between characters.
* "Ouran High School Host Club" by Bisco Hatori: A scholarship student at an elite school pretends to be a boy to work in the school's host club and gets caught up in the world of charming boys. It has lighthearted humor and a dynamic cast of characters.
* "Kamisama Kiss" by Julietta Suzuki: A young girl ends up becoming a land god and develops a close relationship with a fox spirit who protects her. It's a more fantastical story, but the romantic tension and the dynamic of the characters are reminiscent of "Absolute Boyfriend."
For the "Overprotective Boyfriend" vibe:
* "Fruits Basket" by Natsuki Takaya: A girl lives with a family cursed to transform into animals when hugged. While not a romance focused on a single love interest, it explores themes of family, love, and the complex relationships between characters.
* "Yona of the Dawn" by Mizuho Kusanagi: A princess must flee her kingdom and rebuild it with the help of loyal friends. It's a story of adventure and friendship, but Yona's journey involves finding strength and facing her fears, similar to how Riiko overcomes obstacles in "Absolute Boyfriend."
* "Kimi ni Todoke" by Karuho Shiina: This manga follows a shy girl who befriends a popular boy and slowly develops feelings for him. While the boy isn't overly possessive, he is supportive and protective of the heroine, similar to the hero in "Absolute Boyfriend."
For the "Love Triangle" aspect:
* "Honey and Clover" by Chica Umino: A group of college students navigate relationships, dreams, and the complex emotions of love. This story offers a realistic and poignant portrayal of love and its challenges.
* "Vampire Knight" by Matsuri Hino: A girl living in a boarding school for humans and vampires finds herself drawn to two very different boys. It's a more dramatic and supernatural story, but has a similar love triangle dynamic.
* "Ao Haru Ride" by Io Sakisaka: This manga follows a girl who reconnects with a childhood friend who has changed drastically. It explores the intricacies of growing up, second chances, and the complicated dynamics of love and friendship.
Bonus Tip: Check out the "Shoujo" and "Romance" sections in your local bookstore or online manga retailer. These genres often feature similar themes to "Absolute Boyfriend" and provide a wide variety of choices.
Remember, your taste is unique, so explore these recommendations and see which ones resonate with you. Happy reading!