I have built my career as an orthodontist in Japan. I usually teach MFT. However, I noticed that there were many children with respiratory failure before MFT, so I decided to study this course. In particular, as an orthodontist, I am good at the growth and development of children’s faces, so from now on, I will contribute to improving children’s breathing as a breathing instructor. We will mainly provide online guidance to Japan and Singapore. We offer lessons for children who have poor posture, open mouths, difficulty concentrating, worried about their teeth alignment, and snoring or grinding their teeth during sleep.