Voir Yosuga no Sora: In Solitude, Where We Are Least Alone, Season 1 - Episode 9

Nao saves Haruka from drowning and with that event, Sora becomes even more insecure, eventually telling Haruka not to leave home and giving him all sorts of excuses so that he will stay home. On his return from school one afternoon, Haruka finds Sora missing. Finally, after an exhaustive search by the group, Nao finds Sora at the bus stop., Sora reveals to Nao her insecurities with her, that she is afraid Haruka would leave her alone. .