The stickbug is intentional, isn't it? Asato-sensei is really aiming for the modern audience 😂
Though I swear that every chapter they went bankrupt it feels very close to the plotline of their hentai counterparts (get broke>sex) it's almost intentional but no worry our sensei here is a kind muscle.
If they went with Arisu's design they might've made even bigger bank given how thirsty Kivotos is, but hindsight is 20/20😔