Umi Sisters – Fourth Daughter: A Mischievous High Schooler's Rainy Night Relaxation ASMR
1 / 3- Extended lap-pillow ear cleaning for both ears
- Soft whispers layered over gentle rain sounds
- Fully binaural recording with NEUMANN KU100 mic
- 6 tracks, about 61 minutes total
- Circle
- RaRo
- Voice actor
- Ayasa Ito
- Release
- 2023-05-18
- Series
- 海姉妹
- Format
- ボイス / ASMR
- File format
- WAV / mp3同梱
- File size
- 1.74GB
- Age rating
- 全年齢
Perfect for anyone who loves a teasing yet affectionate little-sister character paired with soothing ear cleaning and rain ASMR to unwind or drift off to sleep.
The playful fourth sister of the Umi Sisters invites you on a secret seaside date in the rain, just the two of you. Afterward, back at the Aoshima family home, she gently cleans your ears while the rain continues to fall, wrapping the night in warmth and quiet intimacy.
"You never expected there'd be someone at the beach in the middle of the night, in weather like this, huh?" "...Ah, but just so you know—the fact that you're meeting me at this hour has to stay a secret from my sisters, okay?" "I mean, it's just the two of us, kind of like a date, right?" "...Just kidding. I couldn't be that mean, really." "Just as I expected—you're making such a wonderful face right now." "...Since meeting here has to be a secret from my sisters and my little sister too, I guess this makes it a secret date, huh." Listening to the quiet sound of the rain, spending a slow night together— A moment just between the two of us, that no one else knows about...♪
A high school girl with a slightly mischievous streak. She secretly meets someone at the beach at night and enjoys a date kept hidden from her older sisters and her little sister.
- 1A Walk Along the Shore07:21
- 2A Quiet Moment in the Rain13:51
- 3To the Aoshima House – Mischief on Her Lap07:25
- 4Lap Pillow Again – Ear Cleaning, Right Side11:53
- 5Ear Cleaning, Left Side13:40
- 6A Moment After the Ear Cleaning07:12
- Voice
- 伊藤彩沙
- Illustration
- 海老原べにこ
- Scenario
- 中島大河



This is a story where you spend a sweet time with 'Aoshima Nagisa,' performed by Ito Ayasa, in a piece described as [Relaxing while listening to the rain with a slightly mischievous high school girl]. Thank you so much, everyone, for coming. 《Point! Pick up》 ☆Tips☆ Keywords scattered throughout : 'About a heroine who loves light mischief!?' : 'Night & rain sounds & wave sounds → enjoy a comfortable time' : 'Your ears will be thoroughly healed' There's more besides that. ☆Event☆ ● She has this somehow carefree, hard-to-pin-down vibe, with a mischievous way of talking… but she also has a calm voice at times, wants to touch someone she's let her guard down with, and suddenly closes the distance between you — that's the impression I got… it was really wonderful. ▲ You end up spending a slow nighttime together with the heroine, and listening to it, the sound quality is great… the quiet sound of rain and waves healed my ears so much. Also, the voice actress's voice was great too, which healed my ears even more — really wonderful. ■ In the ear-cleaning situation, the crackling sound feels so good and is just plain healing, and if you close your eyes you get drowsy enough to fall asleep just like that, and her whispering was also so skillful it made me flinch a little — I got to enjoy this time alone with just the two of us. There are more highlights besides these. Please do check out the main story! Thank you very much! "Take it easy ♪"
Even though her acting has such a calm tone of voice, the gap with Nagisa's mischievous way of speaking is really great. And the fact that her tone of voice still has that upward inflection at the end of her sentences despite that calm tone is a character trait you don't see often, and it's incredibly addictive. There's even a part where it makes you chuckle, wondering if the script was written knowing that Ayasa-chan has a fetish for wanting to touch earlobes — you can really feel the link with the actress herself. Since the bonus content lets you read the script including the direction notes, it's also interesting to listen again while looking at that.
This is a work where you spend a nighttime moment together with Nagisa-chan, a mischievous girl. Since the voice actress is Ito Ayasa, I get to enjoy her lovely voice and the situation, and as a fan myself, I'm overjoyed. After enjoying a full date — taking a walk, chatting while taking shelter from the rain — she gives you a lap pillow and cleans your ears at home. The gentle voice you hear during the ear cleaning is sure to heal you completely. As someone who loves Ito Ayasa, this was a wonderful work I can highly recommend.

Sea Sisters: The Fifth Sister — A Relaxing Seaside ASMR with a Shy, Earnest Little-Sister Girl [CV: Eri Suzuki]
Spend a quiet day at a deserted beach with the fifth sister from the 'Umi Shimai' series — a shy but earnest younger-sister type who walks along the shore, collects shells, and later gives you gentle ear cleaning back home. Her bashful warmth and soft whispers create a soothing, intimate atmosphere perfect for unwinding. Recorded in full binaural sound with wave ambience for total immersion.

Sea Sisters: The Third Daughter — A Not-So-Honest Tsundere Heals You with the Sound of Waves (ASMR)
The youngest of three sisters living by the sea invites you for a quiet walk along the shore before bringing you home for gentle ear cleaning and a warm lap pillow. Though she's a bit of a tsundere who struggles to be honest about her feelings, her voice softens into tender whispers as she cares for you. Recorded with a NEUMANN KU100 dummy head microphone, this immersive binaural ASMR blends ambient sea sounds with intimate, close-up attention.

Sea Sisters: Eldest Sister — Healing ASMR with the Sound of Waves
A gentle, easygoing older sister from a family by the sea invites you to relax with her, soothing you with the sound of waves and tender ear cleaning. Together you take a seaside walk, share a quiet moment on the rocks, and unwind on the sofa back home, wrapped in her calm and caring voice. Recorded in full binaural sound, it feels like she's truly beside you.

Sea Sisters: Second Daughter — Relaxing ASMR by the Sea with Your Cool Older Sister
A composed, cool-natured older sister spends a calm day with you by the sea, sharing the sound of waves and distant ship whistles. Once you're home, she gently cleans your ears while you rest on her lap, in a warm and intimate mood throughout.

【7時間】海姉妹 コンプリートパック

Midnight ASMR: Midnight Is Our Only Salvation – Marin, the Delinquent Girl
Marin, a rough-talking delinquent girl who lives next door, treats you to a late-night meal and then stays by your side, cleaning your ears through the quiet hours of the night. Beneath her tough exterior lies a genuine warmth that fills these intimate, everyday moments together.