Yoimiya [宵宮] is a general Japanese word that means a festival held on the eve
of main festival.
In Tennosai,
Shinkosai main festival is held on 2nd Sunday of July normally, so Yoimiya is held on the evening
of 2nd Saturday of July.
The venue is divided into 2 places,
Enoshima Island and the
shopping street in Koshigoe neighboring town and different events are held in each venue.

"
Machi-nagashi" Bon dance (hundreds of local ladies wearing a kimono dance in the
street) begins in
Koshigoe Shopping Street.
A color and design of Kimono uniform is different by the district of the
town.
The street that will be the festival's venue will be closed to the car.
But Enoden train continue to operate normally during the festival. So,
when a train approaches, the dancing ladies are give way and see off the
train.
After Machi-nagashi Bon dance time, "Dashi" (wooden festival
float) that decorated with the illuminations, appearing on the street.
These Dashi march to Koyurugi Jinja shrine while often spinning round on
the way.
Because of Enoden train passes while on the festival, the scene that a Dashi often makes way is seen.

During the festival period, a special temporary shrine for the festival
is built in the red Torii gate of Enoshima Jinja Shrine.
Also at the island side end of the bridge, there is a special banner that
shows that the festival is being held.

In front of Red Torii gate of Enoshima Jinja Shrine (at the end of Nakamise
Street slope), "Kodomo-mikoshi" (Mikoshi portable shrine carried
by local children) goes down and up in crowded
Nakamise Street.
At the alley in Higashimachi town in Enoshima Island,
Enoshima Hayashi (festival music band by residents) parade depart the town and go to Nakamise
Street slowly.
A tone of sorrow sounds of traditional music echoing in the quiet night
town.
Musical instruments of Ohayashi are composed of flute [笛], drum [太鼓], shamisen [三味線], bell [鐘], trumpet [ラッパ] etc.
When the parade of the Ohayashi band teams arrived at the green torii gate
that stands
Nakamise Street in Enoshima Island, they will walk slowly while playing the traditional
"Ohayashi" music toward the shrine on the sloping road.
Because the row of the Ohayashi will walk very very slowly, it is around
1 hour after that the back of the row goes through the torii gate and enters
the street.

When the "Ohayashi" parade arrive at the end of Nakamise Street
slope, worship to Yasaka Jinja Shrine by every Ohayashi team.
Around 21:30, the teams of Ohayashi band starts again a parade to leave
the shrine and go down
Nakamise Street.
The harsh atmosphere of the outward trip has changed completely. The participants
sing and dance lively and go down the slope at night.
The team of Ohayashi band who came down the slope and gathered in front
of the green Torii gate, once it is divided into 4 directions and repeat
the movement which hits towards the center many times. It seems like a
wave of the sea.
The evening festival is over in this way, but that fervor will continue to the
main festival of the next day.