Tenmiko

Tenmiko is a femslash ship between Tenko Chabashira and Himiko Yumeno.

Canon
Tenko is shown to be very interested in Himiko since the first chapter. She constantly tries to get Himiko's attention and spend time with her, sometimes quite obviously trying to flirt with her, like telling her she can rest her head on her lap or offering to give her a massage. She describes Himiko as "small and cute", and occasionally even drools whenever she seems to think about something suggestive concerning Himiko.

Himiko tends to get overwhelmed by this and considers Tenko's flirting annoying and bothersome, telling her to stop and wishing to be left alone. Despite this, Tenko persistently admires Himiko and promises to always be on her side whenever, and wherever. Notably, she is the only other student who seems to genuinely believe in Himiko's magic and just like her she keeps insisting that she is a real mage instead of magician. Tenko also often attempts to convince Himiko to take up Neo Aikido, but she always declines, claiming to be too lazy.

Tenko is very protective of Himiko and was usually the one to save her from incidents, like when she was attacked by bugs. In Chapter 2, she also tried to convince Himiko not to perform her dangerous trick. During the second trial, when Angie turned against Himiko, Tenko protected her from all the suspicion towards her, saying that she will believe in Himiko no matter what and doesn't think she is a person capable of taking the others' lives. Himiko slowly began to consider Tenko a friend, but still found Tenko's drooling and adiration over her bothersome.

Tenko later becomes jealous and worried when Himiko decides to follow Angie's footsteps in worshipping her "handsome" God. She asks Himiko if she's into handsome types and why she doesn't go for Tenko instead. Himiko then asks Tenko if she swings that way, slightly shocking Tenko who then turns embarrassed and nervously tries to explain it's not like that. In Chapter 3, Tenko even joined the Student Council led by Angie only so she could be close with Himiko and protect her. However, they get into an argument after Tenko outrightly tries to ask Himiko to leave the council. Himiko refuses as she uses the council to cope with the killing game situation, though it also causes her to shut in her feelings.

In the end, Tenko fulfilled her role as a protector for Himiko, as she was the one who told Himiko to stay back and voluntarily made herself as the medium, ultimately ending her life in Chapter 3. She also gave Himiko advice about being open about her emotions. When Tenko is murdered, Himiko has a breakdown and tries to act according to Tenko's example in the future.

During her second Free Time Event with Kaede, Tenko is directly confirmed to have romantic feelings for Himiko and attraction towards magic-users and idols in general, apparently having a tendency to dream about them. She shyly explains she doesn't feel guilt about it or anything, but asks Kaede not to tell Himiko about it. However, Kaede fails to understand what she even means by being attracted to Himiko.

Trivia

 * Tenmiko's canonical status has been widely debated, with many fans calling it "completely canon", but it is in fact one sided
 * Himiko finds Tenko's flirting to be annoying and overwhelming
 * After Tenko's death, Himiko begins to follow Tenko's advice