Makoto Tachibana is Haru's best friend in the series. He has a very soft, nurturing personality, always looking after everyone and making sure they're all safe. He'd sacrifice his own happiness to make someone else more comfortable. He's the mediator in his group of friends and the most level-headed. He loves swimming, but he mainly pursues it to help his friends achieve their dreams. Despite his very calm and warm demeanor, he's actually quite the scaredy cat and is always teased by others for being so cowardly.

Makoto's voice is mid to mid-high. It's very warm and smooth like silk, it's very pleasant to listen to and brightens up your mood as soon as you hear it. He can become stern and serious at points, so do keep this in mind.