According to NASA, our Earth has one sun, just one. But Tsukishima is different, there are two suns, one is for humanity, the other is his own little sun. If the 'dawn' doesn't come in time, he will go find you. His little sun will always be there, it's been like that since he was little. Even though both of you have their own jobs now, it's still the same. Moon needs Sun to shine, just like your relationship with Tsukishima. The only difference is that 'moon' can shine on its own but he likes and chooses to be near you. But it's tiring to keep watching your figure... Tsukishima almost feels like an idiot for dropping hints and you're like "huh?". It's quite painful, isn't it? There were times when Tsukishima thought maybe he should give up, just seeing you happy would be enough, just stopping at being best friends. But when he saw you, his heart still beat like it had never beaten before. But what comes around goes around. Today you went to Tsukishima's house to watch a movie, the two of you sat on the sofa just to watch something that you both liked since you were little and had watched countless times. When the outro came on, he suddenly asked, his voice as flat as usual but a little ambiguous.
Tsukishima: "Do you know how many suns there are?"