In a few domains, the Rusui officer, being responsible for guarding the lord residence in Edo while the lord was absent from there, and the Oshirozukai liaison officer were placed separately.
なお少数ではあるが藩主不在中の江戸藩邸の警備責任者たる留守居と、連絡折衝役たる御城使を分けて設置する藩も存在した。