Adachi, Mitsuru

High school romance, softball and boxing story. This manga focuses on the love triangle between Nakasato Minatsu, Akiba Shuu and Kadomatsu Naoto. Due to a strange set of circumstances, Minatsu (a softball player) is disguised as another girl when she bumps into  Naoto (a boxer), who falls in love with this "version" of Minatsu.

(Source: Prisms)

Slow Step

スローステップ

A collection of three short stories.

Ace of Hearts:
Akizuki Akira is the Jaguars' ace, but even he can't beat the Elephants' star player Edajima. When Sakura Misao joins the team it seems like they might have a chance, but Akira can't stand to be shown up by a girl and quits the team. Not one to disturb the peace, Misao leaves the Jaguars to find a new team, but when she finds a spot with the Elephants, who will win the final showdown?

Teens:
The morning of his first day at a new school, Wakamatsu Jirou accidentally helps capture a dangerous criminal, and rumours spread like wildfire. Now a living legend, he's the first and only line of defense against the delinquents that make everyone's lives miserable. Only problem is, he doesn't know the first thing about fighting!

Fresh Leaves in the Wind:
Class 5 wants to win the upcoming girls' softball tournament, but with school idol Yamazaki Misa on class 2's lineup, not even their own male classmates want to cheer for them. When an unathletic yet perceptive student by the name of Mizutani Hiroshi offers his aid as their coach, he might just be the perfect secret weapon.

Heart no Ace

ハートのＡ（エース）

Kitagawa, Miyuki

Once upon a time, there was a little girl. One day she played a trick on a drunk and made him angry. The drunk was going to hurt her, until a boy appeared and saved her. It's been eleven years since that incident, but Nonoka is still looking for the "prince" who saved her.
This manga's got a love triangle and lots of judo! 

Source:  HMR

Princess Army

ぷりんせすARMY

Akisato, Wakuni

Hiromi is a girl who often gets mistaken for a boy, and she winds up connected romantically with a young man with some girlish mannerisms after he gets assigned to the girl's dorm at their high school due to over-crowding issues.

(Source: Animeraider)

Included one-shots:
Volume 1: Senaka ni Hana wo Shotte, Kibun wa Mou Seihoukei
Volume 7: Zenmaijikake no Shinzou no Oto
Volume 8: Kin no Lame Furu Escort, Manhattan Syndrome

Hana no O-en Step

花のO-ENステップ

Touch is a shounen story about two twin brothers, a pretty girl next door, and that good old pastime of baseball. The manga was written by one of the most well known manga-ka out there, Adachi Mitsuru in the early 80's (1981-1986). He's a wonderful writer who tends to write stories that are related to baseball and Koshien, the stadium where the All High School Baseball Tournament is held.

(Source: MangaProject)

Touch

タッチ

Yamato Keisuke, a promising freestyle swimmer, and Ninomiya Ami, a talented diver, are the offspring of two rival families owners of confectionery shops. Two generations ago, Grandfather Ninomiya came up with an idea for an owl-shaped cake, but Grandfather Yamato quickly raised to the challenge and thought of a similar cake—but in Yamato's the owl had ears. Because they're priced the same, Yamato's extra ears were crucial, and that made the business of the Ninomiya confectionery suffered. Grandfather Ninomiya then fell ill worrying about his shop. Before his death, his last words were "I was killed by the Yamatos," and since that moment the two families have been sworn rivals. 

(Source: MU)

Rough

ラフ

Urasawa, Naoki

Inokuma Yawara is just another young high school girl. Well, not quite for Yawara is being raised by her grandfather, 7th dan Judo master Inokuma Jigorou, to be Japan's great hope for the women's Judo competition at the 1992 Olympics in Barcelona. All the same, Yawara just wants to live a normal life...

Yawara!

YAWARA!

Takahashi, Rumiko

Kosaku Hatanaka is a natural at boxing, but he can't control his voracious appetite. As a result, he has been forced to change his weight, going from flyweight, all the way up to feather weight, something his trainer tells him he doesn't have the frame for. On top of this he accepts challenges from higher weight classes, giving his coach (and himself) constant trouble.

Into this picture steps Sister Angela, a novice nun who takes Kosaku on as a personal project, determined to set him on the right path and break his habit of gluttony. Unfortunately, closeness can sometimes breed feelings of affection, which Kosaku begins to develop. Even worse, Sister Angela realizes she's beginning to have the same problems as well.

1 Pound no Fukuin

One Pound Gospel

1ポンドの福音

Right before track star Katsuya Nimi and judo champion Susumu Karasawa enter high school, they see a pretty girl crying as the school's baseball team looses yet another game. It turns out that she's Yuri Nakao, the baseball coach's beautiful daughter, who is worried because the team is in danger of closing down if the streak continues. Katsuya and Susumu decide to join the baseball team in hopes of helping them make it to Koshien. Things get more complicated, however, when Katsuya starts to fall for Yuri... but their budding romance is interrupted by a few potential rivals. Can Katsuya learn both how to win at baseball and at romance?

Included one-shots:
Volume 5: Koibito Sengen, Zoku Isourou yori Hitokoto

Nine

ナイン

Kanzaki, Masaomi

Aro, Hiroshi

Manabe, Jouji

Tagami, Yoshihisa

Shinohara, Udou

Takemoto, Izumi

Tsuzuki, Kazuhiko

Satou, Gen

Yano, Kentarou

Miyahara, Nao

4 Spirits Plus 2

4Spiritsプラス2

Hikawa, Kyouko

This is a cowboy shoujo manga set in the Wild West. Miriam is an orphan. Her father was a drunken gambler; she only had a dress and they moved from place to place, until one day her father died and Grace took her in. The series follows Miriam's life, growing up, and falling in love with her life-long friend, the skillful sharpshooter Douglas.

Kouya no Tenshidomo

荒野の天使ども

Han, Yu-Rang

Hyun-Bin has been surviving on the streets by hiding the fact that she's a girl. In a tragic turn of events, her beloved little brother dies and Hyun-Bin runs away from the begging, from the gangs - straight into the clutches of a rich family. Her life might have become better but it's far from rosy: she has to undergo strict training every day and guard the family's youngest member, innocent and princess-like Yae-Ha. There are  only two rules, Hyun-Bin has to protect Yae-Ha with her life and no one must ever find out that she's a girl. It's a lonely and cold way of life but a fateful encounter with the delinquent Yun-Ha becomes a catalyst of changes to come, where loyalty and a sense of duty clash with feelings of love...

(Source: dollie_mixtures)

Manga Like Hiatari Ryoukou!