Sukisho banks everything on a premise that should be ridiculous and pulls it off because the romance is genuinely felt across all four versions of these two people. Sora wakes up a stranger to Sunao, but their split personalities already love each other, which means watching the waking selves fall for someone they don't remember while their sleeping selves have been in love the whole time creates actual tension instead of just cute chaos. The show never winks at how weird this is. It lets the sweetness and the strangeness exist at the same temperature, and by the end you're rooting for both the amnesia boy and his roommate to remember why they already chose each other.
Sora wakes up in a hospital with no memory of his past after a devastating fall. When Sunao arrives at his school as his new roommate, he introduces himself with a strange caveat: during their time together, Sora will sometimes be called Ran. The reason becomes clear soon enough. Both Sora and Sunao harbor alternate personalities born from childhood trauma, and these darker halves, Yoru and Ran, share an intense romantic connection that plays out when the boys lose consciousness. Watching your roommate's other self treat yours like a lover would freak anyone out. Yet as Sora and Sunao navigate the awkwardness of their shared living situation, genuine feelings begin developing between their waking selves. The closer they grow, the more fragmented memories surface. Sora's amnesia isn't random. It's connected to something significant in their past, something that shaped both of them in ways neither fully understands. This is equal parts comedy and genuine emotional weight, balancing the absurdity of the situation with real vulnerability.