I found the following users who may fit your language exchange criteria:

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/turkkilainenkebabi	2021-01-11	Post	8	English (C2), Japanese	Russian
u/hibikiteki	2021-01-06	Post	8	English (Native), Japanese	Russian
u/harrue	2021-02-16	Post	6	English, Japanese	---
u/soothingrain35	2020-12-20	Post	6	English, Japanese	---
u/succuleap	2021-01-17	Post	6	English (Native), Japanese	---

Please feel free to comment on the above posts to get in contact with their authors.

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