kanjigrid

Read

The names you have heard a thousand times are written in kanji, and the kanji say something. Every character here is a square on your grid.

Demon Slayer

Almost every name in Demon Slayer is a description. Rengoku is literally "purgatory". Kocho is literally "butterfly". Here is what the rest of them say.

Naruto

Rasengan is a spiral sphere. Chidori is a thousand birds. Every jutsu in this series tells you exactly what it does, if you can read it.

Jujutsu Kaisen

One character carries this entire series: 呪, curse. It is inside the title, the energy, the spirits, the techniques and the tools.

Attack on Titan

The English title reversed the Japanese one. Shingeki no Kyojin is the giant OF the advance, and that difference is the whole plot.

One Piece

Haki is supremacy spirit. Yonko is four emperors. The power system is named in plain, readable Japanese.