Same plot as Amagami manga's but from diferent artist/authors.

Kusumi Chiharu gets a message one day that he has been selected as a Monster Tamer, and he is prompted to select his first partner. He thinks little of the message until he receives a giant package the following day. He assumes it's the porn books he ordered, but the huge box ends up containing the unconscious body of a mostly naked girl! She's a ghoul named Zonmi, who intends to fight with him as his partner. However, it turns out that other hot girls at his mostly-male high school are also magical creatures, and Zonmi may not be the only one who wants to fight by his side! (Source: MangaHelpers)

An anthology comic of Infinite Stratos by various mangaka.

The year is 1924, the place, Sauville, a small European country neatly tucked beside the Alps... Kazuya Kujo has been studying abroad at the prestigious Saint Marguerite Academy, where urban legends and horror stories are all the rage. Most Kazuya ignores -- but the story of the "Queen Berry", a mysterious ghost ship, really gets to him. Of course, his brainy friend Victorique is much more intrigued by true stories, and she uses her unrivaled logic to solve mysteries even the town's famous detective can't. Ironically, it's Victorique's inquisitive nature that leads the duo to board a ship that matches the "Queen Berry"'s description to a tee, a ship that might just hold the key to solving a sinister mystery... Kazuki Sakuraba's modern twist on Holmes and Watson-- pairing Victorique, a brittle young girl with doll-like looks with her eager-to-please sidekick Kazuya-- make this international bestseller a must-read murder mystery. (Source: TOKYOPOP)

Set in a fictional European country in 1924, a Japanese exchange student meets a mysterious, brilliant girl who only leaves the library to sleep. Her brother, a detective, relies on her mind to solve difficult mysteries, several of which draw her away from the library. With a drop of sweet romance, you will immediately become addicted to Gosick! *Note: GosickS is a series of side stories taking place before, after, and in between several of the cases covered in Gosick.*

An anthology comic of Re:Zero kara Hajimeru Isekai Seikatsu by various mangaka.

This is a collection of short stories depicting the beginnings of love by Nakamura Hinata. Four cute and tender stories to bring a smile to your face. 1. Kedaruge na Kimi no Kirakira to 2. Kocchi Muite, Shiomi-kun 3. Amatou-kun to Koi no Aji 4. Kimi no Seal wo Atsumetai (Source: Batoto)

Tsubaki Imai is the kind of quiet girl you'd never see in the center of attention. She doesn't really know how to talk to the cool kids at school like the loud boys and the bubbly girls, so she isn't exactly thrilled when she's assigned the seat next to Mamoru's, a big, unfriendly, and kind of scary guy who everyone at school seems to know. But, then, they both become class presidents, and as they start talking... This is a story about an ordinary girl who falls gradually in love... (Source: MangaPlaza)

I, Akechi Yoshitaka, am a healthy male high-school student. When I was invited by a senior to infiltrate the dorm of Shizuru Girls High, for some reason we ended being chased by dangerous-looking female students wielding swords. One of the girls is actually my childhood friend, Tachibana Minori. In order to save me, that girl slashed at the other pursuers! Wh-what a thing to do! Then again, the girls are all okay. But, in exchange, the skirts are taking the damage and getting torn up...!? That's right, the students of Shizuru Girls High are actually Knights clad in armor (skirts) that fight in order to take over the "Territory" inside the school!! And so it is decided that I'll be also involved in the battle aiming to become the King of Knights...!! High tension battle comedy kicking in!! (Source: jCafe24)

What's a kiss that feels good? We'll end up kissing like this again tomorrow, won't we...? Her boyfriend's extremely controlling behavior is making Shuna emotionless. That's when a tutor is hired to teach her at home. "I'll teach you about more than just schoolwork." Huh? What is he saying? What do Kusunoki-sensei's fascinating words and behaviors end up making Shuna do? (Source: Pocket Comics)

An anthology comic of Umineko no Naku Koro ni by various mangaka.

A manga adaptation of the novel 'One Piece: Ace's Story', drawn by Boichi. *Note: Chapter count includes two special one-shots: "ONE PIECE: Roronoa Zoro, Umi ni Chiru" and "Nami vs Kalifa".*