Divine Emperor of Death - Chapter 4476: Entering The Shadow Dimension

An ineffable rebirth, taking advantage of a mystical magic cube that was produced from rebirthing to pass through various worlds(anime, novel, movie, games, etc), collecting whatever I want to obtain!

- Description from MTLNovel

Qiao Zhiya is a hybrid. Before he was born, his elf father wanted him to have a strong physique unique to dwarfs; his dwarf mother wanted him to have a tall body unique to elves. And then he was born, his features delicate and beautiful, his body weak and thin… his strength at the peak of the dwarfs!

Then he crossed. With his beloved little hammer, we walk along females-who-is-as-tall-as-he-is and male-who-is-a-head-taller-than-him-on-average future… blue, thin mushroom wants to go home.

Chu Rong: picked up a small dwarf who always wants to run away. Its cute, wanna drag home.

Qiao Zhiya: ??? Mama, there’s a pervert!

- Description from Novelupdates

Another entry in what you can call the Proto Harem Series: the books written before the Harem Series that take place in the same world.

It’s about a swordswoman whose student is captured, so she goes to rescue her.