https://namegen.jp/
Generates names and surnames out of a million variants, has setting for controlling rarity, can filter by contains/begins/ends with a specific kanji or readings in Latin (and no, there are NO valid names containing characters for "resurrection" or "fuck")
Need a common first name that begins with "hi" with a super super rare surname containing "白" ? Easily.
Hideki Shirasaya 白鞘 英樹
Hiroshi Shiraki 白城 浩
Hideki Motoshiromizu 本白水 英樹
...wheeeee...
What it cannot do is generate names that fit as both male and female: the sex switch is a radio button. I had to research this elsewhere.
Ab-so-lutely invaluable tool since I turned upon my "Your Destiny is Annulled" rewriting it into original work and thus had to create custom stand-in characters for Ranma, Akane and the entire Senshi cast
I woulda died or made a fool of myself (probably both) if I tried inventing that many names by hand.
Need a surname for Agni that include character for "fire"? Easy-peasy, Hisako Hinokawa /火ノ川 緋紗子/Scarletsilkgauzechild Riveroffire
A surname for Ishtar that includes "love"...? Not as easy as only the "koi" character is valid but still it's there: Mai Koimizu / 恋水 舞 / Dance Tearsoflove
Feel the POWAH!