Mayonaka no Acchimono
Ahahaha - so the manga you couldn't find, then read this one instead because you loved this one, you found within this one! CRAZY Itsuho no Koiji! - So souless boy, is actually a berserker. Soul was eaten by his sword. Boy reincarnates. Finds his 'sword' again (next door neighbour) without realizing who/what he is. Current situation. Creepy demon guy conducting human experiments. Wants soulless boy. Baaaad move.
Silver Diamond
OMFG. I CRIED. (But happy ending so yay!).
Eto Irokoi Zoushi
OMG I LOVE IT. The animals are so freaking adorable. THANK YOU AUTHOR for drawing all these beautiful animals :D Ahhhhhhh!
Kami-sama No Iutoori (moegi Yuu)