(idiomatic) to make plans

後: a time after the present time

後に: subsequently, later on

a surname / a place name

later, afterwards, some time after the present

then / soon afterward; after that; thereafter

to stand, to place in an upright position / to release something physical but not solid or liquid / (Internet slang) to start (a thread)

travel, a trip, a journey, a voyage, a tour

to travel, to journey, to go on a trip, to go for a voyage, to tour

a plan, planning, schedule, conception