If you're looking for manga similar to Kimi, Iro, Toumei (Light Novel), you might like these titles.
An assistant to the high school counseling teacher, Rinne Akegami is an introvert who only understands what is true. As if from a revelation from God, she can point out the culprit of any crime there. What complicated matters, however, is that not even she herself understands how she does this! This is where Touya Iroha comes in—he deduces "her deductions" in order to reveal the truth, once and for all!
Kirika Hijiribashi is the Executive Committee Treasurer managing a high school's student council budget of 800 million yen. She is also the only committee member with an additional title: Student Council Detective. As shy as she normally is, she is able to sniff out amazing solutions to bizarre cases. Hikage Makimura transferred into the same high school to escape living in the shadow of his brilliant older sister. Suddenly, he finds himself tricked by the mentally and physically strong female President into not only joining the Student Council, but also becoming Kirika's assistant, to the dismay of them both. Can he create happiness for himself, much less others, in the midst of money-motivated intrigues? Can he make a name for himself when his own name is given to the the lop-eared bunny somehow filling the PR position, a rank higher than his own? And when will people stop asking him to betray a position he never wanted in the first place!?
Gekkou, or "Moonlight", is about the peculiar relationship between a cynical boy and a perfect girl. Said cynical boy is Nonomiya who spends day in day out in boredom, taking refuge from his dull life in his imagination. One fateful day, he happens upon the notebook of the much-rumored beauty Youko Tsukimori, neglected on the ground. Poking out from it is a scrap of paper with the unexpected title "Murder Recipe". His interest ignited, he immediately stuffs it into his pocket, only to find out the promising recipe contains nothing but scenarios that may or may not lead to deadly accidents, not even worthy of being called a plan. When he tentatively asks her about it the next day, she hasn't lost anything. But then her father dies. An accident...
Hamure Hiyori. From the moment she confessed her love to me, I thought we were going to spend our days as a normal couple. Until I learned of her special ability... This is a sweet and sad love story between a boy and a girl who has the power that will drag the whole world with it.
When mysterious phenomena rock the CLAMP campus, there's only one group to turn to - the Paranormal Investigators, skilled at getting to the bottom of all things otherworldly! This kooky cast of characters, loosely based on the CLAMP artists themselves, will take you on a wild journey through their own adventures and misadventures. When the three-volume series wraps, you'll be left with a lasting impression of the multitude of mythology haunting both CLAMP School and the Paranormal Investigators.