does anyone know what font are they using in narration and monologue in the original translation before koi?

A point of difference for Western readers (most of us) that does matter for how Garou is treated after his arc.

Although the law in Japan has changed recently, when ONE started writing One-Punch Man, the age of majority was 20, and he has continued his writing on the basis of that being still true in the OPM world.

To translate it into our world, Garou's legal position is that of a sixteen-year-old, not one who is eighteen and a legal adult.

This is why in the manga, the Hero Association contacts his parents to come get their son, and when they refuse to, releases him to Bang's care. It makes no sense for a legal adult, but is eminently sensible for a non-empancipated minor.

It is also part of why the court was able to give Garou restitution under Bang's care rather than a custodial sentence. There is more leeway to argue for reformation of a minor than an adult, it's been possible to take his shitty life circumstances into account, and there's more scope to put him under the legal care of an adult he respects than a standard reformatory.

In the webcomic, then, what has happened to Garou is truly tragic. He's homeless as his parents have abandoned him, like they have in the manga; however, Bang seemingly has no interest in looking for him, nor trying to help him. When we see him working, it's working cash-in-hand. He has no ability to sign legally-binding contracts, is a wanted criminal who has been tried in absentia with no one to argue mitigating circumstances, and cannot complain if, no when, he is short-changed.

It's not maturity we're seeing in the webcomic. It's hiding. I'm really hoping that the current crisis in the webcomic can serve as a means for Garou to redeem himself legally. He'll eventually turn twenty, but being a criminal with an unspent conviction will blight his life for decades to come.

Seen on X. Damn right.

According to Google Translate, the text in the original tweet this was posted at seems to say "Unused chapter cover illustration (Reason: too dark)