How can I improve this magazine page layout?

It does not look that bad, but there are some things that could be improved. Basically there’s a lack of unity.

Reading sense

Does this particular directionality respond to any different rule than the western sense of reading? Due to the proximity of the text blocks, the reading corresponds to the right version at the image below, the western logic, but the blocks number order does not.

Balance margins

The text body has four different horizontal margins sizes, the yellow marks. There should be some balance, at least equal the two central.

Graphics

There are seven different types of graphics whose only common point is color; otherwise, excepting the typographic characters, they are all of different formal types. In my opinion there are already too many glyphs with both languages to add one more new alphabet to the design [ ] • – —- > ] • —- [ >.
It would be interesting to choose one of the following three options:

• Unify them in some way
• Remove some
• Contrast them more

The dashed lines are not aligned.

Column Width

It is not so problematic, but is there a reason that columns 2 and 3 have different width with respect to 1 and 4? I don’t think it’s the amount of text because there is enough space to get all the columns with the same width. If we divide the layout into three main parts, none has the same base structure, visually there’s an irregular vertical stagger.

Text

I don’t know if there are optical rules when combining Latin text with Japanese text, but in the design the Japanese characters are too big in comparison and visually they seem to have more relevance.

In addition to the texts in both languages, in the Latin there are at least three different Sans Serif Fonts (see the lowercase “a”). Possible unification: all titles the same font, all text the same font. Avoid mixing similar sized fonts with glyphs of different structure in the same characters