This is how shading and gradation in manga was done in during pre-digital era; using screentones. Lots of meticulous shaping, scraping, scoring to get the desired shading effect.
Every. Single. Panel. Manga is hard work. 🥲
Things that scare me:
employment
unemployment
getting married
never getting married
having kids
never having kids
falling in love
never falling in love
living
dying