If by "ya you" you mean "yoyuu", it means "easy" or "relaxed."
ya me te means stop it...
"Ya sui" in Japanese can be understood as "cheap" or "inexpensive".
"House".
It's not Japanese, if you mean the name's transliteration into Japanese, it would be アイシャ /ai sha/
'Yawa' coulld mean 'gentleness, weakness, softness' among many other things.
鞘 /sa ya/ in Japanese commonly means 'sheath, scabbard'. If you mean as a Japanese name, it has numerous writings such as 小夜 or サヤ. If you mean a former Japanese town, now merged with other towns/villages to turn into Aisai City, the name is written 佐屋町 /sa ya chou/.
It is a colloquial way to say 'see you later.'
Bakery is called as "paan-ya" in Japanese. Where "paan" means bread and "ya" means shop.
Room in Japanese is Heya (pronounced Hey ya)
The only this it could be if just pronounced like you wrote it (me ri shi ya) is Japanese reading of name 'Melisia'.
矢= ya
ya mum