Responses
brother if you're a decent reader you'll read in between the lines. they enjoyed goofy moments together, yoshida was likely onea the only people denji cared about, even if he only thought of him as sort of a friend, it was still someone he had familiarity with. if you think the character development is weak then thats ur problem, and u dont understand or perceive the growth and dynamics of the characters in the story.
ngl yoshida was so underused fujimoto should've actually shown denji and him becoming friends instead of them randomly telling us about it last chapter. the character development weak :/