Plot is as follows: MC gets reincarnated, is a kid that is isolated from the main noble family, helps half sister and gets in trouble for it, find out later that his maid is his mom but gets thrown out because she helps people during influenza pandemic, has elf chick to teach magic (I think), main family gets killed, except for half sister but tries to save them/revenge (don’t really remember this part well) ends up becoming the (pseudo)head of the family. That’s all I can remember from the starting chapters. Thanks in advance!