Bankei Yotaku, also known as Bankei Zenji, was a Japanese Zen master who lived during the 17th century. He is considered to be one of the most influential Zen masters in Japanese history, and his teachings continue to inspire and guide Zen practitioners today.

Bankei's relationship with other Zen masters was complex and multifaceted. On one hand, he was deeply respected and admired by his contemporaries, and his teachings were widely sought after. On the other hand, he also faced criticism and opposition from some of his fellow Zen masters.

One of Bankei's most significant relationships was with his teacher, Dosha. Dosha was a strict and traditional Zen master, and Bankei initially struggled to conform to his teachings. However, through his own introspection and self-discovery, Bankei was able to develop his own unique approach to Zen practice, which eventually led to a deep understanding and appreciation for Dosha's teachings.

Bankei also had a close relationship with another prominent Zen master, Hakuin Ekaku. Hakuin was known for his strict and rigorous approach to Zen practice, but he also recognized the value of Bankei's teachings. In fact, Hakuin once remarked that Bankei's teachings were "like a jewel shining in the darkness."

Despite these positive relationships, Bankei also faced criticism and opposition from some of his contemporaries. This was largely due to his unorthodox and unconventional approach to Zen practice. Bankei emphasized the importance of self-discovery and the inherent enlightenment of all beings, which was in contrast to the traditional emphasis on rigorous meditation and strict adherence to Zen teachings.

However, Bankei remained steadfast in his beliefs and continued to spread his teachings, which eventually gained widespread recognition and respect. In fact, many of his critics eventually became his students and followers.

Overall, Bankei's relationship with other Zen masters was one of mutual respect, admiration, and sometimes, disagreement. His teachings were seen as a valuable contribution to the Zen tradition, and his influence continues to be felt in the practice of Zen today.