hi yui did you set up a date with him in the tavern? if you have the eternal heart of fire knight and bond level 5 and loyalty 110+ you should be able to propose a meeting in the flower fields and when he agrees to it, you should be able to meet him there. also sleeping 1 night after bond leveling (ex. between bond level 5 and 6) is always necessary in order to allow the next stage of progress. hope this helps!