Yuuta Segawa starts his first year in college. He meets second year Raika Oda under unusual circumstances thanks to Sako and Nimura of the Street Observation Research Society. Meanwhile, Yuuta bumped into Raika again had a uneasy conservation with her and as she left he starts to have a crush on her. After joining the Street Observation Research Society for 3 months, he meets up with his sister and misinterpreted him with seeing Raika. His sister asked him to visit Sunday to see her kids. However, it turned out into a babysitting task for the kids while they are out for awhile which his…