Takami Yuuki

Three elementary school aged girls - Misaki, Saya, and Marika - suddenly arrive at your house. They come from different environments and have different personalities, but an AI has determined that they are extremely compatible with you as a family and it has decided to put you together to live under one roof. The three of them may seem like just young children, but they will heal you with their big love for you in a motherly way. (Source: Kadokawa, translated)

A manga adaptation of the School Idol Diary Special Edition.

Subaru has only ever wanted to play basketball, but right after having transferred to a high school specifically to play in their basketball club, the team captain, whom Subaru looked up to as a hero, vanishes, leaving behind rumors that he ‘eloped’ with a grade-schooler! The team is disbanded and the members are shunned by their schoolmates. In the middle of this, Subaru’s aunt, who teaches in grade school, asks Subaru to come coach a girl’s basketball club at her school. At first, Subaru wants nothing to do with it, but the determination and drive of one of the girls on the team gives him a change of heart.

Three girls are the only members of the Fortune Telling department at Sakumigaura School where they each pursue their own style of tapping into their energy to find answers. Hoshikawa Crystal uses her crystal ball while Nano Kari uses meditation and chi and Kaguyama Hime uses ancient spirits. The three are always together helping each other hone their abilities, but they never forget to have a great time.

Based on the Eroge by UNiSONSHIFT. We've got our main character, Tsuwabaki, a normal student, but one day he bumps into a weird guy with "not cosplay ears" who gives him a drink. It transforms Tsuwabaki into a chibi lamb! The teacher explains everything, and the teacher tells him the only way he can get back to normal is to find a chosen girl and have her catch the 7 Stardrops. The only thing is, is he can't reveal his true identity.