《Completed》 A story which Riku adopted by another family and being part of something 'dangerous' (maybe?:p) So many thing Tenn doesn't know about his brother I don't own idolish7

From the start of spring, a small the population of kids/teen (usually below age 20) go through a little cute transformation referred to as "In Season". "In Season", when people from 4 - 20 years old can get cat ears and tails around 50 - 75℅ per year. Riku who never goes into season for more than 8 years thinks this year will be the same. It is actually unusual for an idol to go into season. the only idol that go into season and popular is one and only Kujou Tenn. but what if Riku is in a season diferent from what he predicted? what could pawsibly go wrong?