[Yazaki Corporation] 090-type II non-waterproof 4-pole coupler & terminal set [YZ0902-4PS]

Contains male coupler and female coupler 1pcs each, terminals for the number of poles.
Retainer is included for couplers that require a retainer.

[Sumitomo Wiring Systems] 090-type TS non-waterproof 4-pole coupler & terminal set type-1 [SM090TS-4PS-TY1]
https://www.uniquesystem-jp.com/product/2577

It also fits with the above Sumitomo products.
There are Yazaki and Sumitomo products, but they have the same shape.