Tokimeki Memorial Only Love OVA

Tokimeki Memorial (ときめきメモリアル, Tokimeki Memoriaru?, lit. "Heartbeat Memorial") is a popular dating simulation series by Konami. It consists of 6 main games in addition to a large number of spin-offs. The games are notable in the dating sim genre for being highly nonlinear. Their nickname amongst their fans is the contraction TokiMemo.

The gameplay in Tokimeki Memorial focuses on scheduling, dating and stat-building. The player must organize his or her time between asking out members of the opposite sex and developing his or her abilities at school and sport (with the long-term goal of becoming more seductive, not out of any intrinsic value). Dates are frequent but very brief, with usually only one multiple-choice question to determine whether your partner's love meter will increase or decrease. One playthrough lasts for a fixed period of 3 years of high school (on the order of 5-10 hours of play), at the end of which the character with the highest love meter confesses their love.

Tokimeki Memorial Online has been adapted into a 25 episode anime TV series, Tokimeki Memorial Only Love, produced by Konami Digital Entertainment Co., Ltd. and Anime International Company and based on Tokimeki Memorial Online, which premiered across Japan on October 2, 2006.

Source: Wikipedia