(Kyūshū or informal) It is indeed so. / Yes.

is, am, are

Polite form of だ (da), after uninflecting parts of speech: to be / After the plain past or nonpast form of -i adjectives (or nonstandardly verbs), to form the polite ending.

Polite form of のです (no de su, used to indicate strong assertion).

used to give an explanation or reason / used to give an emphasis or a special sense

seems like; looks like; I hear that

is expected to ~; should ~; supposed to ~

Yes / It seems that (adjective/adjectival phrase) / That's right

expresses a reason or cause, results in a conclusion / used to emphasize a certain point / used to explain a situation or circumstance

want to do