MTL - Lord of the People: Build Immortal Realm From Scratch - Chapter 44

Luke transmigrates as Abel Bishop into an alternate world vastly different from his own. On the surface, it appears ordinary, but beneath lies a hidden war.A special group of people, known as Occultists, wield supernatural abilities to combat the anomalous entities that threaten humanity's existence.Thrown headfirst into this age-old conflict, Abel has only his strange abilities, his sheer will to survive, and a mysterious coin that always returns no matter how many times he tries to get rid of it...

A mecha otaku is reincarnated into another world as Ernesti Echevalier (Eru). In this world there exist huge humanoid weapons known as Silhouette Knight. Dreaming of piloting those robots, Eru, with childhood friends, Archid Walter and Adeltrud Walter: together they will aim to become a Knight Runner, pilot of Silhoutte Knight.

To be exact, the female lead is an “older sister” type, amid many beauties and handsome guys, she's no white lotus.Also, it's said that the name of this book is the same as a brand of sheep's milk powder.

Shuu is a member of the literary club that can’t write. One day, he gets a mysterious message on his phone from a girl called Eina, and from that impulsive contact, they begin to exchange messages. They talk of things like their shared interest in novels and grow close. However, when they try and meet, they discover a shocking truth. Eina lives… not in the present, but five years in the past! How will their love develop, parted by five years of nights…!?