Here. And here. This too.
Plenty of physical contact, considering they are very recent friends. Yamada was already hugely popular when the series started, so most of her other friends are likely 'old'. As for the 'secrecy' of their interactions; Ichikawa is hugely antisocial. He intentionally avoids people, by his own accord. Most of their interactions happen when Yamada is also avoiding people, to enjoy her snacks in peace. Thus, not intentionally hidden, it's just the only time they have opportunity to hang out. Also given Ichikawa's withdrawn nature, maybe she thinks he doesn't want public attention. So she humors him, like she would a friend.
I hope they get together, but so far she only treats him as a friend.
Plenty of physical contact, considering they are very recent friends. Yamada was already hugely popular when the series started, so most of her other friends are likely 'old'. As for the 'secrecy' of their interactions; Ichikawa is hugely antisocial. He intentionally avoids people, by his own accord. Most of their interactions happen when Yamada is also avoiding people, to enjoy her snacks in peace. Thus, not intentionally hidden, it's just the only time they have opportunity to hang out. Also given Ichikawa's withdrawn nature, maybe she thinks he doesn't want public attention. So she humors him, like she would a friend.
I hope they get together, but so far she only treats him as a friend.