My name is Yoshida Toshihide from the Soto sect.
When we, the chief priest, perform an eye opening ceremony for Buddha statues such as Buddhist altars, we recite the following evocative sentence (explaining the significance of making an eye opening memorial service and explaining the Buddha's merits).
“Buddha bodies fill the Dharma world, and they usually don't appear in front of groups at all. There's no such thing as following a relationship and being immortal.”
If I were to paraphrase it
This world is full of Buddhas, and they appear right in front of everyone. There are times when we try to put our hands together in an attempt to rely on Shinto and Buddha for something (when we think about our ancestors or our hearts feel discouraged by worries). Also, there are times when we have feelings of gratitude and memorial service (as if unwittingly saying “thanks to you” for being protected and supported by an invisible power). In this way, the Buddha is always on our side, and there is no such thing as not appearing.
Whether it's Amida, Kannon, or Yakushi, if you have a Buddha or Bodhisattva that you believe in in your own way, you don't necessarily have to keep the principal image at home. When you think about that Buddha and put your hands together, the Buddha will be present (appearing right in front of you).
Even if you don't have a firm belief, if you have a Buddhist altar at home or feel close to the family temple on a daily basis, I think you have feelings similar to the one described above.
The introduction has been lengthened, but if Tk_K46 enshrines a Buddha, why not consider the following method?
1. The principal image of the family temple at your parents' house, or the principal image of your purpose (sect)
2. In the previous question, it was written that “it has its roots in martial arts handed down by Daruma Daishi,” but Daruma Daishi is called the founder of the Zen sect. According to the tradition of Zen Buddhism, Buddha was the first founder, and Daruma Daishi is said to be the 28th founder. I think it would be nice if the Buddha, or Buddha, prayed as the principal image.
You might also be concerned about the cost aspect. The principal image for a Buddhist altar costs tens of thousands to hundreds of thousands of yen when it becomes a Buddha statue. If it's a hanging scroll for a Buddhist altar, I think you can buy it for a few thousand yen.