2-day festival held in early September that fills the streets south of Shimokitazawa Station. You can see the schedule for the weekend on the official website, but performances kick-off at 1pm on the Saturday. Stalls line the streets in the local area on both days. Kitazawa Hachiman Shrine is about a 10-minute walk south from Shimokitazawa Station.
Event details are taken from official sources whenever possible. It is always prudent to check the official event website before attending to make sure that there have not been any changes. If you know of an error in the calendar, then please let me know through the contact form.