Has two accounts each on Pixiv and Twitter, with each pair having a different focus:
https://www.pixiv.net/users/2617623
https://www.pixiv.net/users/25638885
https://www.pixiv.net/stacc/metsu-m
https://www.pixiv.net/stacc/metsu_m
https://twitter.com/metsu_m
https://twitter.com/metsuko_
https://twitter.com/intent/user?user_id=3253840046
https://twitter.com/intent/user?user_id=882581586398412803
https://sketch.pixiv.net/@metsu-m
https://sketch.pixiv.net/@metsu_m
