Logic Masters Deutschland e.V.

This is my entry for turn 2 of season 1 of The Skunkworks League, hosted by damasosos92. In this round, the prompt was to create a puzzle telling the story of the song The Boy by Tom Rosenthal.

Rules:
*The boy sets out on an unexpected adventure, seemingly full of chaos*
Chaos Construction: Each row, column, and region must contain the digits 1-9 once each. Regions consist of a set of nine orthogonally connected cells and must be determined by the solver. Bolded lines within the grid are given region borders.

*He makes his way forward, not necessarily knowing where the path may lead*
Draw a one-cell-wide path of orthogonally connected cells that starts on the grassy hill in r2c2 and ends at the sea in r8c9. The path may not touch itself, not even diagonally.

*He steadfastly follows his guide*
Every region is either entirely on the path or entirely off the path.

*He sees many fascinating sights along the way, barely knowing which way is up anymore*
Digits along an arrow must sum to the digit in that arrow's bulb. Every arrow bulb is on the path.

*There is growth along the journey, both in knowledge and wonder of the world, especially when there are unexpected twists and turns*
-- Every region along the path is completely filled with one or more hidden straight horizontal and/or vertical non-overlapping thermometers (i.e., every cell in a region along the path is part of one such hidden thermometer).
-- Along each thermometer, digits strictly increase from the bulb to the tip.
-- Every thermometer is at least two cells long.
-- The bulb of each thermometer is closer to the start of the path, while the tip is closer to the end of the path (i.e., if you were to walk along the path from start to finish, the first cell of each thermometer you encounter would be the bulb, and the final cell would be the tip).
-- Every thermometer bulb in the middle of a region must be on a corner of the path. The bulb in the first cell in a region on the path may or may not be on a corner of the path.

*At the end, he reflects on his experiences, wondering if the meaning of it all is embedded in patterns he's seen before*
Wait, is this .... ?