SouMako

SouMako is the slash ship between Sousuke Yamazaki and Makoto Tachibana from the anime series Free!.

Canon
The two interact very little in the series. The only time they have a one on one interaction is in the OVA when they discuss Nagisa's ability to coerce people into doing what he wants.

Fanon
Souske and Makoto tend to serve as a second focus couple in RinHaru fics.

Fandom
AO3

Trivia

 * Makoto's animal is a killer whale/orca while Sousuke's is a whale shark
 * Makoto main stroke is backstroke
 * Sousuke's main stroke is butterfly