Timeline of Arcs and Chapters involved (Advanced chapters from Patreon are included):
Chapter 1 to Chapter 3: Shisui's transmigration.
Chapter 4 to Chapter 8: First meeting with Warrod and initial training.
Chapter 9 to Chapter 17: Ultear and Meredy arc. Training included.
Chapter 18 to Chapter 25: mini S-Rank Mission and Sabertooth (Sting and Rogue primarily) arc.
Chapter 26 to Chapter 32: Original S-Rank Mission arc.
Chapter 33 to Chapter 36: Fairy Tail arc.
Chapter 37 to Chapter 39: Life in Fairy Tail part 1.
Chapter 40 to Chapter 42: Life in Fairy Tail part 2.
Chapter 43 to Chapter 47: Training Team Fairy Tail, Year X789. Reunion with Ultear and Meredy.
Chapter 48 to Chapter 50: Revelation of Truth.
Chapter 51 to Chapter 53: Crime Sorciere.
Chapter 54 to Chapter 56: Fairy Tail's rise, Year X789.
Chapter 57 to Chapter 62: Long term S-Rank mission, Seals, and Intensive Training.
Chapter 63 to Chapter 68: Umbra Noctis. Truth of the Shadows.
Chapter 69 to Chapter 76: Fairy Tail's downfall.
Chapter 77 to Chapter 79: Return of Fairy Tail.