Tasuku pieces together the surprising connections between Chiaki and Keita. Chiaki and Keita, meanwhile, not even aware that they'd had those connections, discover that they have some seemingly irreconcilable differences.
You don't do love. You fall in love. 
.نحن لا نتحكّم في الحبّ، بل الحبّ يتحكّم فينا
Man verliebt sich nicht willentlich,
das passiert einfach.
No puedes elegir de quién te enamoras.
No puedes elegir de quién te enamoras.
L’amour, ça se choisit pas,
ça nous tombe dessus.
Non scegli di chi innamorarti. 
Ti capita e basta.
Você não ama. Você se apaixona.
Любовь слепа, её не выбирают.