Ichiwaka is really amazing as a character. Unlike other male teen MCs who would be happy to do something like this (whether it be intentional or not), Ichiwaka stands out because he will literally stop himself from enjoying stuff like the handholding scene in this chapter. He knows he would enjoy it - he clearly has more than enough self-awareness that he likes Yamada - but yet he cock-blocks himself because he has no self-confidence.
This chapter really does remind us of how opposite this couple is: Ichiwaka is mentally mature, but physically immature and emotionally scarred, while even though Yamada is physically mature and presumably emotionally balanced, is mentally younger than her physical body. Sad to say, though, as showcased in the previous chapter (and how males work in real life), is that boys at that age look at physical body first before anything else (if there even is anything else).