おらっしゃっちゃう
居らっしゃっちゃう
orasshacchau

Godan Verb (ru)
Godan Verb (u)
Auxiliary Verb

The completive aspect (contracted form) - indicates completion or regret of いらっしゃる

1. Are/were present (unexpectedly); Are/were there (with nuance of lingering/regret)

Completed Action
Colloquial
Usually Written in Kana