As for the first episode, I couldn't find a detailed summary. However, I can suggest some possible sources where you may find more information:
Purely aural connection. Kaito learns Yuki’s habits—she drinks chamomile at 11 PM, she cries to Billie Holiday, she practices cello badly but passionately. This density is safe; it requires no vulnerability. mihitsu no koi episode 1
"Mihitsu no Koi" is a Japanese anime series that revolves around romance, drama, and mystery. The series premiered on October 9, 2003. As for the first episode, I couldn't find a detailed summary
This admission triggers a shift in Hoshino. He corners Natsuki, his demeanor changing from defensive to aggressively intimate. Hoshino kisses Natsuki—a messy, desperate, and unexpected act. It’s a moment of impulse, born of adrenaline and hidden longing. This density is safe; it requires no vulnerability
An older man who remains the target of Yunika’s constant criticism and hostility. Series Overview Anime: Mihitsu no Koi - AniDB