Priest who does the pilgrimage from a country to another just like the cloud which goes empty, or the flowing water may not become settled, so the priest who travels were called "unsui (=cloud and water)"; especially the priest of the Zen sect was called this way.
The figure in the photo wears the formal costume for the monk of the Zen sect to practice asceticism travels.
He wears a "hitatare" kimono, dyed in ink-black color, and a "maruguke-no-obi (=obi band with the stuffing inside)" band which is called "shukin (=hand cloth)" in ink-black color.: a pair of white "kyahan" leg protectors, "waraji" straw sandals, a "Gojoh-gesa" surplice called "rakusu" on the shoulder.
He hungs a "zutabukuro" bag on the chest and a "kesa-fumikura (=surplice book warehouse)" case in front and a "atozuke-kohri" wicker portmanteau backside of the body.
He also wears a "ajiro-gasa" hat and has a "zabu" in the left hand.
Things like a "kesa" surplice and a "zagu" items are installed in the "kesa-fumikura" case and then they are covered with a "kesa-bunko-fukuro" bag.
A set of "ohryohki" bowls and a "johkin (=purity cloth)" is wrapped and fastened to the "furoshi (=bathroom carpet)", a Japanese wrapping cloth. [The "ohryohki" is a set of bowls which a priest uses as tableware. The priest brings also to religious mendicancy, and food is received. It is usually a set of five bowls in pile.]; a black covering paper called "hattan" is inserted into the lower part of them.
The rest of the personal effects, such as a "mizu-ita (=water board)" board, a pair of "hashi" chopsticks, a "hashi-bukuro" bag, are wrapped and fastened by a "doh-hatsu-bukuro" bag or a "furoshiki" bag and are hung with a "maru-himo" string.
The necessaries for days are installed in the "atozuke-gohri" bag and tied up with the "maru-himo (=round string)" string and are hung in fron and back of the body.
The costume style in the photo has not change since the Zen sect introduction; the same costume can be seen on the streets today.
The style is the form of the Sohtoh sect and the form of the Rinzai, another main Zen sect, is slightly different from it.