Maki and Tenko were both students of the Ultimate Academy of Gifted Juveniles and took part in the killing game. Though, not many interactions are shared between them in game. However, in Chapter 3, Tenko seeks Shuichi and Maki for help to put a stop to Angie's spirit ritual.
However in Tenko's Danganronpa V3 Ultimate Talent Development Plan event, she teams up with Maki for a three-legged race. Tenko tells Maki that having her help is like having the help of 100 people, and encourages both of them to win. Maki comments Tenko was really pumped up and she didn't plan on holding back. Tenko then says she looks calm and competitive and that she could definitely rely Maki. While she brushed it off, Maki told her to assume whatever she wanted. Tenko did just that and states if it's them, going to the top would be a piece of cake.
Though, both characters do have some similar traits. Both characters have powerful strength (Maki being the Ultimate Assassin and Tenko being the Ultimate Aikido Master). Also, both have their hair styled into two long twin-tails and both are attired in sailor uniforms.
Maki has more of a serious personality and Tenko is more cheerful.