Who the heck told you that?! The show starts off with Ichigo being in school (he’s 15, like where else would he be lmao). 95% of the series takes place in paranormal worlds (e.g., Soul Society, Hueco Mundo). 

Don’t watch it because I watch it. Watch it if it intrigues you, but whoever told you that clearly hasn’t watched the series xD. Fair warning: there are a lot of filler non-canon episodes that you should probably skip if you decide to give it a try.