Plagioclase
Mitsuruさん's corrections are always excellent and his explanations are extremely useful. 本当にありがとうございます！

Anisha
Mitsuruさん English is great and always gives great corrections, detailed explanations and extremely helpful suggestions. One can learn a lot from Mitsuruさん.

Rae
Mitsuru is always very helpful, and open to answering questions. His corrections are very thorough and will definitely help learners better understand Japanese grammar.