Ep. 1: Naoya proposes a polyamorous relationship with childhood friend Saki and confessor Nagisa

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Naoya Mukai rejects childhood friend Saki Saki’s rival Nagisa Minase but finds her adorable, prompting him to convince Saki to accept Nagisa as a second girlfriend. Saki, overwhelmed by Nagisa’s cuteness, agrees to friendship and eventually permits the polyamorous arrangement after Naoya explains his honesty. Naoya suggests they move in together since he lives alone. On the first night, Saki admires Nagisa’s domestic skills but feels slight jealousy over her larger breasts. When Nagisa offers Saki priority with Naoya, Saki clarifies their relationship is not yet sexual. This triggers an awkward discussion where Naoya admits a desire for a threesome. Saki admits temptation due to Nagisa’s cuteness but calls Naoya a pervert. Naoya delays intimacy for comfort, surprising Saki, who appears disappointed but violently denies it.