Sacred Heart

Many Things Happened In The Past

Strike Arts

Emperor

Einhart Stratos

True Feelings

Nice to Meet You

Brand New Stage

If It's Just Walking the Same Path Together a Bit

Desired Strength

Surprise Attack

The Match Begins

5 Year Anniversary Commemorative Collaboration Comic: Fate/Stay Night x Mahou Shoujo Lyrical Nanoha

Match Up Duel

Unchain Knuckle

Finish Blow!

Inter-middle

Registration

Rivals

Asteon

The Feelings of the Knight of the Iron Hammer

Secret Training

Elimination Matches

Top Fighter

Preliminaries Start!

Backsword-Drawing Art!

Starry Sword

Prime Match!

For Victory!

Meist Arts!

Nephilim Fist

Hegemon's Fist, Creators Wish

The Playing Blade VS The Thunder Emperor

Preliminary Group 4's 3rd Match!

Moment of Defense

Strike Arts Competition

Hitting vs Downing

Power of Dream

Red Hawk

Direction of Passion

More than Yesterday, More than Today!

The 4th Round's Prime Match

Strong Arm

Binding Chains

Voice

Essence

Change Meeting of Descendants

Recollection's Memorial

Infinity Library

Witch's Bottle

Witch's Wish

Witch's Cauldron

Witch's Memories

Jeremiah's Notes

Peaceful Memories

King of the Throne

End of an Era

A Step Beyond the Past

For Tomorrow

4th Match

All or Nothing

The Power to Break Through

Color of the Sky and the World

From Today Into Tomorrow

ReStart

School Life

School Festival

Next Tour

Burning Drive

Fist of the Spring Sunlight Dojo

Yen & Xue!

Secret Map

Storming In! The 3 Caverns!

Training Challenge

Irene Hardin

Skill and Power

Tai Raikaku

Tsukigami

The Path's Whereabouts

The Trials Treasure

Two Paths

Domain

Objective

Anticipation

Approach Run

Taking on the World

Edelgard Barkas

Road to Victory

Reciprocation

Gale

Roaring Dragon

What I Want to Come True

The Deciding Moment

Path to the Future Stage

The Two's Countdown

Potential

Expectations and the Ideal

Tying Down

Breakthrough  Flash

Rainbow Flash

The series takes place four years after the events of Mahou Shoujo Lyrical Nanoha StrikerS, during which Nanoha Takamachi rescued and adopted a young girl named Vivio, who is the reincarnation of the Sankt Kaiser, Olivie Segbrecht. After entering her fourth year of elementary school, Vivio is given her own intelligence device, Sacred Heart, and gains the power to transform using her adult Sankt Kaiser mode. She soon comes across a girl named Einhart Stratos who, similar to Vivio, is the descendant of another Sankt Kaiser ruler, Claus G.S. Ingvalt. As Einhart becomes determined to prove her fighting style is the strongest, Vivio befriends her and, together with her friends, enters a martial arts tournament where they fight against various opponents and learn more about their past lives.
 
Included one-shot: 
Volume 2: 5th Anniversary Collaboration Comic: Fate/stay night x Mahou Shoujo Lyrical Nanoha