tokekomuとけtokekomu
1.

To mix into a liquid state, becoming indistinguishable from the substance it is combined with.

2.

To gradually assimilate and harmonize with the atmosphere or environment, becoming part of the surroundings.

3.

To integrate and become one with a group or community, where an outsider becomes fully accepted and part of the collective.

Example:

空が海と一つに溶け込むように見えた。