From Fantasyshrine:

Even after Colonel Michel Rosenberg and Hans Schuyler had their honeymoon, their life together was still filled with H-action! This seemed to have affected the Defense Army as a whole. Love started blooming everywhere: between the enemy commander and the colonel?s assistant, Miller; the instructor and his new soldier; the intelligence captain and the enemy?s spy; the mercenary captain and the elite chief of staff. Couples were accumulating in droves!

Reference made to 'Koutetsu no Daitenshi'.
Colonel Rosenberg and Hans story starts in 'Koutetsu no Daitenshi' and then continues in 'Datenshi ni Sasageru Uta'

Chapter 1: C'mon Baby, To My Army! ~ Pgs. 8-38
Colonel Rosenberg threw away Millers Ring, This time it*s unforgiveble, Miller runs off but gets caught by the enemies. Colonel Kingstones chance has come to conquer Millers heart.

Chapter 2: The Waterside Lovers ~ Pgs. 40- 54
A very hot Day, colonel rosenberg is just melting away under the heat, then hans to go swimmeing in a near by creak...

Chapter 3: The Rebel

Chapter 4: My Beloved Exile

Chapter 5: First Line of Virginity ~ Pgs. 2-33

Chapter 6: The Beast Who Whispers Love
A pretty elite officer gets kidnapped by an ultra manly mercenary, and he would do anything ( including H stuff) to get back to headquarters!

Chapter 7: Captin Bennett's Diary ~ Pgs. 35-39

Adventures of a guy who has a harem full of magical knights! Will he able to chose the bride that is perfect for him? Let's find out!

A girl who regrets dying without being filial to her parents, she wishes that in her next life that she will have a body that is invincible. God decides to grant her that wish, she awakes suddenly in the body of a baby... Could this be reincarnation?

From Sound of Jewels:

Nagashima Mai started her first part-time job. She's so nervous especially when she met her coworker: Miyamura Arashi who's really cold. But is he really a bad person or...?

From Chibi Manga:
I want to met new people and a lover! doing a part-time job should have been fun! that's what Mai thought, but she was late for her first day. Plus, her sempai Arashi is so cold(>△<)!!

She wants to quit but she finally discover how kind Arashi is. Will she fall in love with him!?

1) Downtown Shuffle
Everyone wants Sakura: an aloof, elegant and unattainable beautiful "princess". Syou is no exception. He desperately wants him. So bad that he visits all Sakura's favorite night clubs nearly every night. Somehow, Syou unexpectedly wins Sakura's attention. His friend and bartender Miyako is pleased for him. However it doesn't go as smoothly as Syou's hoped. Sakura may be truly unattainable.

2) Let's Go to the Hospital
Tsukada Riku's mother forces him to track down their missing cat. He gets into an accident that lands him a hospital, which his high school friends nicknamed "ERO hospital" (Porno hospital) because of a hospital sign and rumors that nurses seduce hapless patients at night. Will Riku be seduced? Dr. Hiroo might have the answer...

3) Eternal Melody
Rock guitarist Kouga is acknowledged as the guy who formed a rock band, Zest, at high school and has an eye for beauty. However he's never explained why he chose Mei as their singer who ~ as Kouga says ~ has nothing but good looks. Kazuki, a good looking singer of HYPE, enters the picture with a desire to take over Mei's place ...

4) Four Seasons
Mizuta Hayato is overjoyed when he discovers his childhood friend Hyouno Wataru has returned ~ from a four-year stay in Tokyo ~ to work as a teacher at his school. Wataru isn't, however, what he used to be. He's so cold now.

NOTE: Cover image from 2009 edition.

A touching story of a doctor who wanted to help people even though he became a vampire.

In a world where robots called Familer rule over the humans, a young girl Jusen attempts to stop their dictatorship with the help of a strange man, who seems to know her and her dead mother....

From MangaHelpers:

For Shinonome Keisuke, high-school student Kotone Tasuku is the only person in the world whom he can communicate with. Once a brilliant surgeon, Shinonome passes away at a young age, only to wander the world as a ghost, a ghost that only Tasuku can see and talk to. When an accident leaves Tasuku’s hot childhood friend Takeuchi Mai’s younger brother severely injured, the only way that he can survive is if Shinonome and Tasuku work together to become the most unusual and possibly talented pair of emergency surgeons the country has ever seen! [vyc]

We trust professionals with our money, our possessions, our health...even the future our children. You could say such individuals deserve to be called "professionals" because they act in a way that merits such a high level of confidence and faith. However, there's a sacred ground that most people are loath to let even the most consummate professional trespass into: the mind. Is it possible - or safe - to let another human being psychoanalyse you completely? Who can guarantee that the experience won't irreversibly change you...for the better or the worse?

This is the story of a genius psychologist, Dr. Frost, who's capable of just such a deep level of psychoanalysis.

It's a short one shot story about an inventor and his niece. "Genius" or idiotic inventor Haido causes trouble with his inventions for his niece, Airi and her parents. Due to one of his inventions, Airi's crush got injured (somewhat), souring their already strained relationship. With her sudden kidnapping, what would the inventor do?

A strange case occurred in London at the end of the 19th century. What is the true face of the vicious criminal roaming the city? The famous masterpiece epitomizing the phenomenon known as split personality is adapted into comic format!

The hero is Dr. Kishiwada, a brilliant but demented scientist, who creates bizarre mechas, battles the forces of evil, or just mucks about. There are many parodies of B-grade sci-fi movies and of TV. Crazy, slick, and very funny.

It is about a young, prominent surgeon, who left a prestigious hospital in Tokyo and moved to an isolated island in the southern part of Japan. He works at a clinic there as the only doctor on the island. First the islanders didn't trust him but slowly he gains their respect.

In 2004 Dr. Koto Shinryoujo won the Shogakukan Manga Award for general manga.

Official Chinese : https://www.books.com.tw/products/0010302123

[By the studio that brought you and !]

Raymond was the illegitimate son of the king.

After being shamed and scorned, he ran away and became a healer… only to end up being ridiculed for getting an F rank.

Then, one day, a miracle came upon him.

[You have awakened as a player!]

[Job: Surgeon (SSS-rank)]

Raymond gained medical knowledge that had not existed in this world. The great legend of Raymond, the first surgeon, begins now!

This doctor is much closer to death than anyone else! Overwhelming murderous tension. A medical suspense action, which you've never experienced, rises the curtain!

From The Zero Alliance: No doctor can cure or figure out the cause behind the the illness of Mii’s older brother. Except for Dr. Psyche. But this mysterious doctor is perverted and even had a criminal record. Can she really trust him?

From Aerandria Scans:
Saeki Fumio is a genius who earned a PhD at the age of fourteen. When she goes back to Japan to announce her invention, a bunny robot endowed with artificial intelligence called Alice, it turns out that someone is trying to steal Alice. With the help of Hikaru, a personal bodyguard that she hired, will Fumio be able to keep Alice safe and sound?

A planet-threatening space disease, the "demon flu", has infected an inhabitant of Earth, and a space doctor is needed! The Space Medical Bureau has chosen Dr. Rurru for the job, but -- unfortunately for Minao Hitoharu, the infected patient -- she has a tendency to mishear and misspeak (with a mind towards ecchi) to comical effect.