よろこ いさんだそうだ
yorokobi isanda sōda

Godan Verb (mu)
Evidential Auxiliary

Expresses hearsay about a past event ("I heard that...") of 喜び勇む

1. They say [someone] was overjoyed and elated.; It is said [someone] was thrilled and courageous.

Past/Perfective
Hearsay Evidence