Basically, the focus is on the third eye, the Ajna chakra. However, after the Sahasrara chakra has opened to a certain extent, it seems better to focus on the Sahasrara at the crown of the head.

There are also schools of thought that focus on the heart, the Anahata chakra, and some schools teach that people who find it easier should do so. However, in my surroundings, almost everyone focuses on the area between the eyebrows, and I haven't seen anyone who focuses on the Anahata.

In my case, the basic focus is on the area between the eyebrows, but recently, it's been on the Sahasrara.

Previously, when a sense of divine consciousness emerged from the Anahata chakra, I often focused my awareness on the Anahata. However, that was for a relatively short period, perhaps around six months. After the sense of divine consciousness, which seemed to come from the back and merge with myself, spread to various parts of the body, I returned to the meditation of focusing on the area between the eyebrows.

Recently, when I meditate, or even when I'm not sitting in meditation, I try to calm my awareness and consciously slow down my breathing, using my breath to quiet my mind. This allows my awareness to reach the Sahasrara, and an aura rises to the Sahasrara, making it dominant. This is generally easier to do during meditation, but I think it can be done in everyday life if the environment is not too noisy.

Of course, the extent to which this can be achieved varies, and proper opening requires seated meditation. However, it is possible to stabilize the state to some extent even in everyday life.

When the Sahasrara becomes dominant, energy becomes easier to enter from the heavens or the sun, and the upper and lower energy channels along the spine (the Sushumna in yoga) become more activated.

About a year or two ago, it took an hour or two of meditation for the aura to reach the Sahasrara. Before that, it was rare or almost nonexistent for the aura to reach the Sahasrara and enter a state of stillness. However, recently, the aura gathers around the Sahasrara in just 5 or 10 seconds, or at most 10 minutes, making it dominant and entering a state of stillness. This further strengthens the energy channels that connect to the heavens, and they become increasingly activated.

Initially, the Sahasrara was only slightly connected to the heavens, like a crack. But gradually, it began to open, becoming the size of a finger. Recently, it seems to have opened even further, and a considerable portion of the arm or the crown of the head has opened to a significant extent.

When the Sahasrara chakra opens properly, I feel a sensation as if even the bones in my head are making a "tick-tick" sound and expanding.

Sensory-wise, a shining, pyramid-like shape of light appears at the top of my head, where the Sahasrara chakra is located. Above that, there is a path that extends upwards, somewhat transparent. Along that path, I often see many square boxes or objects that resemble Lego blocks, but I don't know what they are. Nevertheless, it connects to the heavens, and because the energy routes are connected (although it seems like a small amount for now), the energy from the heavens descends to me (the term "descends" is not entirely wrong, but rather, it's more like a connection), and I feel my body being filled with energy.