Asai sits next to 5 phonetic neighbors — Isaiah, Kai, and Sai are the closest matches by sound. Most share Asai's Japanese cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"morning glory, morning well (depending on kanji)"
"sound, reverberation"
"son of Faelan (the little wolf)"
"high and mighty, chief"
"people's king"
"bright-headed"
"valley of the River Kent"
"lake dweller, one from the lake"
"loyal servant, devotion"
"God is gracious, son of Jack"
"follower of Christ, anointed one"
"homeland person"
"brave, courageous"
"honoring God, to honor God"
"may God give strength"
"acquired, craftsman (via Hebrew Cain/Kaine)"
"beloved"
"none compares to God"
"great, rocky hill"
"Yahweh has given"
"guardian, watchman"
Similar sound: These names share phonetic patterns with Asai — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Japanese origins, giving them the same cultural heritage as Asai.
Rhythm: Asai is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.