うんぱい×松本いちか2作品連動企画・第2弾！！SIDEうんぱい、SIDEいちか、ドラマの行方で結末がかわる恋愛シュミレーションドラマ！没入感高めの全編主観で美少女2人との青春恋愛体験！！クラス替えで隣の席になったちょっと大人びた同級生・うんぱいさんと近所のお姉さんで女教師でもある女教師・いちか姉。この2人と繰り広げる恋愛学生生活。春夏秋冬様々なイベントを通じ、気持ちが揺れ動く青春三角関係を体感！うんぱい視点、SIDEうんぱい（MIDA790）とセットで2つの中出しストーリーをお楽しみください！

Unpai x Matsumoto Ichika 2-Work Collaboration Project – Part 2!! A romance simulation drama where the ending changes depending on the course of the drama, SIDE Unpai and SIDE Ichika! An immersive first-person perspective experience of youthful romance with two beautiful girls!! Unpai, a slightly mature classmate who sits next to you after a class change, and Ichika, the older sister from the neighborhood who is also a teacher. Experience a romantic student life with these two. Through various events in spring, summer, autumn, and winter, experience a youthful love triangle where feelings fluctuate! Enjoy two stories of unprotected sex from Unpai's perspective, SIDE Unpai (MIDA790) as a set!