MTL - The Mad Cultivator - ~ Outer Volume 28: Magic Wheel

God's Seal Cathedra Rex, Part Two!Two sons of the dragon, each different; a genius elder brother and a good-for-nothing younger brother, who despite being identical twins, are worlds apart. However, they share an identical desire for peace. On the night of their birth, the moon was high in the sky.

[Have you become more learned today?][Accounting for the capacity of your brain, your study efficiency has been increased to 28 times that of normal.][The remaining amount of energy you have for studying today, 26 hours.][You will enter an exhausted state when your energy is depleted and be unable to obtain new information.][Please relax by using the functions within the system and restore your energy as soon as possible.]With limited energy and the onset of fatigue, the Study Monster had no time to think too much--papers to come!Had the heavens not grant me this system, the unending sea of knowledge would seem like a long night.

Warning contains-Incest/Ntr/ Heavy NetorareA Boy struggles with the problems of being raised in a family full of lewd older women.

With a marriage contract forcefully done, he married her, and all she could do was comply, and resent him deeply for that and for all the following misunderstandings they faced.
However, it was already too late when she understood she actually loved him.