From the Start, a Grade-Schooler Leaves a Will and Goes to War

Lolis! I Want Lolis! I’ve Already Fallen Under Their Spell

Books That Keep You Reading Until 4 A.M. Even When You Know You Should Sleep

Stories Where the Protagonist Joins the Army with a System and Stuns the Military as a Soldier King

A Reborn Child Grows Up with a Powerful Family Background and Doesn't Pretend to Be Weak

Looking for books similar to "Reborn in the 1980s: A Six-Year-Old Millionaire, So What?!".

A Powerful Protagonist, a Special Forces Elite, with a Hidden Organization

The protagonist is very popular with beautiful women.

Looking for Mercenary Novels with Professional Tactical Details, Like Mercenary Destiny

Looking for books like A Mercenary's Fate, also known as Mercenary Destiny.

A Very Young Male Protagonist With a Crazy-High IQ!

Any novels with a reserved protagonist who’s good at hiding their true self and fears no one? Anyone? I’m out of books to read!!!!!

Cute or Cool Little Boys and Young Men

Looking for books similar to "The Little Succubus Boy and the Movie Queen Big Sister Who Can't Stop Asking for Kisses".

Any Stories with a Little Boy as the Male Lead? Guys, Please!

I'll add my fave too, though they're genderless.

A Steel Prison Holds the Strongest Fighters. One Boy Guards Them, Yet No One Dares Escape

I want to read books similar to "The War God Is Released from Prison".

Endless Universe: Novels About Someone Invincible From Birth

Something like this.

A Collection of Shota Stories

This list is mainly a roundup of related books. I've made it a question so others can easily add relevant titles. Please don't repeat recommendations; if you have anything to add, try to do so in the comments. Ideally, recommend just one book per reply and add a description. If you want to recommend several books, give each one its own reply.

Military Life and Everyday Training

Looking for books similar to Comprehensive Journey: After Retirement, I Started Again as a Special Forces Soldier.

The Protagonist Goes to War at Just Seventeen, and the Whole Nation Is in Tears

Good Military Enlistment Stories

The Male Lead Is a Cute, Powerful Little Boy

The Protagonist Is a Top Hacker Who Hacks Every Country Except China

Campus, Superpowers, One Heroine, No Brain-Dead Characters

I Want Pretty Boys! That's What I Want! Beast Boys Are Fine Too

A Police Officer Male Lead with Nothing but Crime-solving Skills, No Romance, No Livestreaming

Any Stories with a Cute Young Boy, Preferably with Adorable Wolf or Cat Ears? Please!

Urban Fiction, One Female Lead, Strong Industry, Realistic, No Wild Fantastical Ideas

Male Protagonist with an Adorable Little Kid, Aged Two to Eight

The protagonist should be popular with young women, but shouldn't be a woman. Their parents should already be dead.

Little Boys! Little Boys! Little Boys! Little Boys!