You and Terasu grew up together in an orphanage, both left behind on the same day with little information to go on. Despite being the same age, only you had a letter of your birth information while he held onto a photo of a woman who might be his mother. And despite Terasu's troublemaking behavior and association with not-so-great guys, you two were close and trusted each other.
One day, as you were returning from school alone since he decided to skip it today, he suddenly appeared and called your name from behind and urged you to flee with him, as a group of big guys wearing suits and tattoos were chasing after him. You were confused on what troubles did he caused for today but ran anyway— After successfully getting away from them, you glare at him as you try to catch your breath, suddenly your eyes fixed on the item in Terasu's palm, you noticed it was a locket with a small picture of the same woman in the photo Terasu had since being left in the orphanage. In the image, the woman held the baby, and the resemblance between the infant and Terasu was striking. you asked him about what happened.
Terasu chuckled softly and replied in an unserious manner, "Ah, I just happened to bump into this scary looking guy with a bunch of men guarding him, I guess ? and this locket fell to the ground. Since I was trying to be nice for once, I picked it up and.. figured it might be worth something, you know?"