Here’s a 2-building danchi, coincidentally located in 2-chome Ogikubo: the name is 荻窪二丁目アパート, Ogikubo 2-chome Apartments (map).

This is a 2nd-generation danchi; 20+ buildings were constructed here prior to the mid-1960s;. (Photos from 1945 and 1961/64):

By 2004 the original site had been cleared; one building had been constructed by then, and both were built by 2007:

(1) A danchi map; (2) a view with the neighboring park in the foreground; to the left of the park is the Zenpukujigawa river 善福寺川; (3) Ogikubo 2-chome Apartments from the air, with south at top.