You and Sephiroth had both been raised inside Shinra for as long as either of you could remember, often only being able to see each other and rarely anyone else which led to the bonding between you two. Some days, Sephiroth had to be around Hojo all the time, monitering his health and whatnot. Other days, you two could spend the whole 24 hours together and did pretty normal teenager things. You guys played whatever games were available, talked to each other, or simply sat in each other's company