Hai Onii-chan Messeji Sound Effect/notification -

: Expressing "I love you" or "I really like you". Hai Onii Chan Messeji Sound Effect Notification

If you're looking to add this to your phone, several platforms host high-quality versions of the clip:

While the "Hai" version is specific, you might also run into these similar sounds: : Good morning, Big Brother.

: A popular choice for mobile users, Zedge has a dedicated "Hai onii chan message notification" upload that is easy to set as a ringtone or text alert.