Tarou is one of my favorite OCs but the one thing that I always used to struggle with him was his design. I was never really satisfied with his previous design because things just looked pretty off with his head design...until a while ago that a friend gave me an idea to try to make him look more bull-like which after some attempts I got something I like and gave him better clothing. His bio got small changes so I'll just share:

Tarou is a middle-aged blue bull who's the staff representative for the afterschool Fitness club due to his experience with training people.
An easy-going guy who likes the simple things in life, and is good with helping people relax and give good advice. He can be a pervert but usually knows when to stop or tone it down when one feels uncomfortable.
He trains Yamato, Kazuya, and Ryo as those three are the only students in the club through general exercises and helping them practice with the sports they do. He also joins in the exercising to help get himself back in shape and feels it's a good way for him to bond with the boys.