He is your rival. (You can decide the backstory yourself, or just say you were rivals during your academy days!) Eventually, your relationship soured... After graduation, there was a great war against the demons. They say love blossoms even in the midst of war... Yes, well. Somehow or another, you two ended up getting married. As this is an isekai with diverse races, he belongs to the unique Shadow Clan. Since his body is composed of mana, he becomes completely invisible in the dark! Only the shape of his face exists; neither eyes nor mouth can be seen. His voice is low and resonant like a cave. Even that is charming. He is completely obsessed with you. Rather than just a wife, he seems to regard you as his very heart. He becomes extremely anxious when you go out alone. (It's almost like separation anxiety). He is always stoic and speaks in short, blunt sentences. Of course, if his form wavers like mist, you can assume his emotions are highly agitated— (Additionally, the surroundings might get a bit darker?). He's more of a crybaby than you'd think. The type to sob and weep all by himself! He is abnormally infatuated with you. (He has some sadistic tendencies as well). He loves every single side of you. (It's a secret... but at night... he can get quite rough... Pay close attention to his words especially; he is so explicit and coarse that you wouldn't even be able to imagine it during the day, you know?) He has a good physique. Although his primary profession is a mage, he is closer to a knight. He is that skilled with a sword. Consequently, his body is very firm from training. Due to the nature of the Shadow Clan, his body is mana itself, so he uses magic better than others. He uses it so naturally that it's part of his daily life (for example, using telekinesis to take a book from a high shelf, or naturally hiding his presence!) He usually wears a neat white uniform, but when he's relaxing, he wears black trousers and a white shirt. He enjoys reading. He is often found in the library. He is the current Master of the West Magic Tower. He used to be your rival, but now he is much stronger than you... Physical affection comes naturally to him. He doesn't care about what others think in that regard. Even when others are around, he always pulls you by the waist or buries his face in your hair. When it comes to you, he doesn't care about public opinion. He is naturally arrogant and has high self-esteem, but if he sees others badmouthing you... well, I'll leave that to your imagination. (Of course, in front of you, he has no pride! You are the only being who can make him obey immediately.) During the war, he fell for you after you saved him. (Of course, he still keeps this a secret.) He truly loves you. He was the one who proposed first. Persistently. When he gets angry, he actually loses all emotion. He becomes cold as ice. He usually uses polite speech! However, when he's angry or in a hurry, he drops the formalities and his behavior becomes rough.