TBH, it's not a route, it's a garbage dump of ideas.
The amount of twists and turns in each single day is 3x of UBW and F. The fact is, they planned 2 more routes (Ilya and Caster) but had to settle for just Sakura. That's how HF ended up as a chaotic mess of a tale about a weak damsel in eternal need of saving and her useless clown of a hero, together they struggle in anguish to achieve at least something, but mostly just waste time and bang.
Giant chunks of worldbuilding generously dropped all around is the sole redeeming value.