Final Fantasy VII Remake - Manuscripts Guide

Manuscripts are Key Items that will add 10 SP to your weapons. You will need to buy some from Moogle Shop, solve certain side quest, or beat Chapters bosses on Hard difficulty (alongside with doing the side quest on Hard again, as they will grant you manuscripts when you defeat a certain unique monster that is part of the quest itself). 

Cloud's Manuscripts

The Art of Swordplay Vol. I - Buy from moogle shop which you can access in Chapter 8 (and later in Chapter 14 as well).
The Art of Swordplay Vol. II - Complete "Cloud Vs. Shinra Thugs" 3 star colosseum mission in Chapter 9 Colosseum
The Art of Swordplay Vol. III - Complete "Corneo's Secret Stash" side quest in Chapter 14
The Art of Swordplay Vol. IV - Complete Chapter 2 on Hard difficulty (defeat The Huntsman - the boss with the shield before jumping on the train)
The Art of Swordplay Vol. V - Complete "Rat Problem" side quest in Chapter 3 on Hard difficulty (kill all 3 Doomrats)
The Art of Swordplay Vol. VI - Defeat Roche in Chapter 4 on Hard difficulty
The Art of Swordplay Vol. VII - Defeat Reno in Chapter 8 on Hard difficulty
The Art of Swordplay Vol. VIII - Defeat bandits as a part of The Price of Thievery quest in Chapter 9 on Hard difficulty
The Art of Swordplay Vol. IX - Defeat Jury-Rigged Cutter in arena as a part of Shear's Counterattack quest in Chapter 9 on Hard difficulty
The Art of Swordplay Vol. X - Defeat Bombs as a part of A Dynamite Body side quest in Chapter 9 on Hard difficulty
The Art of Swordplay Vol. XI - Defeat Hellhoud in colosseum as part of Corneo's Secret Stash side quest in Chapter 14 on Hard difficulty
The Art of Swordplay Vol. XII - Defeat Specimen H0512 boss in Chapter 16 on Hard difficulty
The Art of Swordplay Vol. XIII - Beat "Cloud vs. 3-C SOLDIER Candidates" arena mission in Chapter 17 after beating the game
The Art of Swordplay Vol. XIV - Defeat Rufus boss in Chapter 17 on Hard Difficulty

Barret's Manuscripts

Sharpshooter's Companion Vol. I - Buy from moogle shop which you can access in Chapter 8 (and later in Chapter 14 as well).
Sharpshooter's Companion Vol. II - Complete "Barret Vs. Shinra Thugs" 3 star colosseum mission in Chapter 9 Colosseum
Sharpshooter's Companion Vol. III - Complete "The Power of Music" side quest in Chapter 14
Sharpshooter's Companion Vol. IV - Defeat Scorpion Sentinel boss on Hard difficulty at the end of Chapter 1
Sharpshooter's Companion Vol. V - Defeat Crab Warden boss on Hard in Chapter 5
Sharpshooter's Companion Vol. VI - Defeat Airbuster boss at the end of Chapter 6 on Hard
Sharpshooter's Companion Vol. VII - Defeat Reno and Rude at the end of Chapter 12 on Hard
Sharpshooter's Companion Vol. VIII - Defeat Failed Experiment at the end of Chapter 13 on Hard
Sharpshooter's Companion Vol. IX - Defeat Tonberry unique mini boss during Madams Goons side quest in Chapter 14 on Hard difficulty
Sharpshooter's Companion Vol. X - Defeat Type-o Behemoth during Subterranean Menace side quest in Chapter 14 on Hard difficulty
Sharpshooter's Companion Vol. XI - Defeat Rust Drake during Chocobo Search quest in Chapter 14 on Hard difficulty
Sharpshooter's Companion Vol. XII - Defeat Valkyrie at the end of Chapter 15 on Hard difficulty
Sharpshooter's Companion Vol. XIII - Beat "Barret vs. 3-C SOLDIER Candidates" arena mission in Chapter 17 after beating the game
Sharpshooter's Companion Vol. XIV - Defeat Whisper Harbringer boss in Chapter 18 on Hard Difficulty

Tifa's Manuscripts

Way of the Fist Vol. I - Buy from moogle shop which you can access in Chapter 8 (and later in Chapter 14 as well).
Way of the Fist Vol. II - Complete "Tifa Vs. Shinra Thugs" 3 star colosseum mission in Chapter 9 Colosseum
Way of the Fist Vol. III - Complete Wavering Heart side quest in Chapter 14 (Normal difficulty, but probably you can get on Hard if you didn't finished it on Normal or bellow)
Way of the Fist Vol. IV - Complete "On the Prowl" side quest in Chapter 3 on Hard difficulty (kill Wrath Hound)
Way of the Fist Vol. V - Defest Enigmatic Spectre at the end of Chapter 4 on Hard difficulty
Way of the Fist Vol. VI - Complete time trial room west of main elevator where you've found Chocobo & Moogle Materia. Open the box there in the vent
Way of the Fist Vol. VII -Defeat Abzu in beginning of Chapter 10 on Hard difficulty
Way of the Fist Vol. VIII - Defeat Eligor at the end of Chapter 11 on Hard difficulty
Way of the Fist Vol. IX - Defeat Abzu boss in Chapter 14 on Hard difficulty
Way of the Fist Vol. X - Complete Missing Children side quest in Chapter 14 on Hard difficulty
Way of the Fist Vol. XI - Defeat Trypapolis unique enemies during Chocobo Search quest in Chapter 14 on Hard difficulty
Way of the Fist Vol. XII - Defeat Sahagin Prince at the place where Corneo's secret stash in Sewers is; in Chapter 14 on Hard difficulty
Way of the Fist Vol. XIII - Beat "Tifa vs. 3-C SOLDIER Candidates" arena mission in Chapter 17 after beating the game
Way of the Fist Vol. XIV - Defeat Jenova Dreamveawer boss in Chapter 17 on Hard difficulty

Aerith's Manuscripts

Telluric Scriptures Vol. I - Buy from moogle shop which you can access in Chapter 8 (and later in Chapter 14 as well).
Telluric Scriptures Vol. II - Complete "Aerith Vs. Shinra Thugs" 3 star colosseum mission in Chapter 9 Colosseum (come back via Chapter Select)
Telluric Scriptures Vol. III - Complete "Secret Medicine" side quest in Chapter 14
Telluric Scriptures Vol. IV - Defeat Rude in Chapter 8 on Hard difficulty
Telluric Scriptures Vol. V - Complete Weapons on a Rampage quest in Chapter 8 on Hard difficulty
Telluric Scriptures Vol. VI - Complet Kids on Patrol side quest in Chapter 8 on Hard difficulty
Telluric Scriptures Vol. VII - Complte The Angel of the Slums side quest on Hard in Chapter 8
Telluric Scriptures Vol. VIII - Complete Paying Respects side quest mini-boss in Chapter 8 on Hard difficulty
Telluric Scriptures Vol. IX - Defeat Hellhouse boss in Chapter 9 on Hard difficulty
Telluric Scriptures Vol. X - Beat Ghoul (first ghost type boss) in the Train Graveyard, Chapter 11 on Hard difficulty
Telluric Scriptures Vol. XI - Beat "Aerith vs. 3-C SOLDIER Candidates" arena mission in Chapter 17 after beating the game
Telluric Scriptures Vol. XII - Defeat the Swordipede boss in Chapter 17 on Hard difficulty
Telluric Scriptures Vol. XIII - Defeat The Arsenal boss in Chapter 17 on Hard difficulty
Telluric Scriptures Vol. XIV - Defeat Sephiroth in Chapter 18 on Hard difficulty