Why is Tomo just seeing hideaki as someone inconvenient? I think their relationship is pretty common like friendship between guys in real life. They friends at this point anyway so yeah? Tomo is insensitive but Hideaki didnt even tell him what his action meant or what hes feeling about so i guess you cant blame all on Tomo? This is pretty realistic, even if Hideaki drop alot of hint, if i were Tomo i will be careful not to intrepet it, especially cuz they both guys.
I'm not completely blaming Tomo just critiquing his behaviour and sympathising with Hideaki. And best friends don't just see each other (normally) as convenient people to hang around when they are not with their gf/bf most best friends actually want to hang out with their friend , introduce them to their partner and hang out they also help them when troubled not just use them.
Hideaki is a freakin beautiful an emotionally tortured soul, he deserves someone better than insensitive Tomo, who only sees him as someone convenient.