Some notes before we start:

Firstly, I got all the plot descriptions from Anilist, so you can use that site to double check your answers if you want to. Keep in mind potential differences in phrasing or grammar, though.

Secondly, I tried to make these fairly easy to guess: although the largely a priori etymology of the words makes them a bit inscrutable, you can still work from the structures of the titles, and the initials and finals and lengths of proper nouns. If I decide to do this sort of quiz again, I might make it either harder or even easier depending on how this one goes. Feel free to ask for hints in any case — namely, time period, genre, or translations of individual words — and I may or may not give these hints to you, depending on how revealing it would be.

Note that the proper nouns are inflected for gender, with masculine names ending in -a or -á and feminine names ending in -e or -é (the -á/-é forms coming from an assimilation with a root ending in -a), and names ending in -ǒ or -ő being essentially unisex (coming from an assimilation of the -a or -e with a root ending in -o, -ó)

With all this out of the way, let's get guessing, shall we?

Edit: Thanks for playing! Every title has been answered for. I'll be back with more soon, probably!

~~1: K****é: Kyertoste ňa Xaydǒ~~

~~Ś. K****é u Ś. M****ya ňa yagváyniyav edreska u vircka zuruňet́ey yekruňuynev giriḿe Ś****e dum ranskiv čuc̋ucki. So šo, buheyniya truňet́ey, šo ńe : žo-hayriniyav anskav anskey. Sire u pedayoste ňa uńe u ňeni, na šo yaruyav ana desokoćka ňa aklet́e yegune kaysulet́e na sohe! Yerokdǒvfe ňa yakoḱav anska : yatvarsav ana he, keyn siňet́e?~~

~~2: Fućkav Metey S****é~~

~~Kav anskagunska he, 4-žareyne K. S****é ňa sinda : yapoĺav nǒnska K*ő. S****é bant́e yapoĺa u joret́e yayḿav W**d́é so suhe, so šo ran voya sauret́e yametey ko yarayey. Fe he, yaLićkav yaMetey K*******a tosulet́a S****é dum yafućkav yametey nay nej́eskey la, so šo S****é so rine T****ǒ u dajeyna Ś******a kot́e óre, šo feket́ev buhspinske S****é.~~

~~3: Kya☆zare~~

~~Kum yont́ev vurede svegira? Gvataňdri ňa roktárev pske kay? Keyn so yageyv štoḱey ňa ariḱiv "mo-e" : kyerti? Kaysuliv yegevfe na yeruňev anime-hayrinev kaysulećke so I. K****é iḿej́eske. Nay maňga- o kotosuŕoy-alima he, šenǒnsulet́e na yabonxuleyv nǒnskeyde yalana, so yeriniv vurede, šo možev ariḱe moz̋ulet́e.~~