Board Thread:Questions and Answers/@comment-85.5.230.120-20160821080204/@comment-8695373-20160821090334

Both XBlazes are spin-offs, as well as BE and Heart mangas.

The chronological order should be like this:
 * XBlaze Code: Embryo
 * XBlaze Lost: Memories (Shin Yokozaki part)
 * BlazBlue: Bloodedge Experience (both volumes)
 * XBlaze Lost: Memories (Phantom Field part. I know that there's no time, but somewhere at this point Celica and Konoe arrived there)
 * BlazBlue: Phase Shift 1
 * BlazBlue: Phase 0
 * BlazBlue: Phase Shift 2
 * BlazBlue: Phase Shift 3
 * BlazBlue: Phase Shift 4
 * BlazBlue: Continuum Shift Extend stories:
 * that which is inherited
 * Heart to Heart
 * BlazBlue: Remix Heart (and Remix Heart Gaiden stories from BlazBlue: Chronophantasma Extend)
 * BlazBlue: Chronophantasma Extend stories:
 * Collision
 * Determination
 * The Rat
 * BlazBlue: Variable Heart
 * BlazBlue: Calamity Trigger
 * BlazBlue: Continuum Shift
 * BlazBlue: Chronophantasma
 * BlazBlue: Centralfiction