also, with my brother’s newfound interest in anime, i’ve been scouring the internet for series that would interest him so he’ll continue to watch with me

so far i’ve gotten shigurui death frenzy and tasogare otome x amnesia. 

any suggestions as to what a 15 year old boy who generally dislikes anime and only likes “action-y” or “mystery” anime would like? 

anyone know any anime similar to these titles that he would like?