|Surname Name||Yasui Yasu|
|Birthday (Age)||April 4th (n/a)|
|Type of Character||Main Cast|
|Height||5′ 3′′ (159cm)|
Yasu is a deeply religious girl and very open about her beliefs. Difficult to communicate with at first, Yasu has an endearing and unique brand of sweetness that hints at a deeper personality obscured behind her work.— Official Lessons in Love website
Yasu Yasui ("Yasu") is part of the Main Cast of Lessons In Love. Yasu was the twentieth girl to join Sensei's class, doing so in v.0.16.0p2 She lives in Room 9 with Touka Tsukioka.
Not much is known about Yasu's past. According to Makoto, she has no parents, relatives, or previous place of residence. Before joining the class, it's suggested she lived on the streets.
She has dedicated her life to her religion, spreading the word of her God to anyone who she might run into. Her attempts tend to make people uncomfortable, as seen with Sana and Sensei.
Yasu almost exclusively talks in religious metaphor or indirectly, making it extremely difficult for anyone to speak to her. She doesn't initially seem to have many hobbies, aside from her religion, but does eventually take an interest in manga. In addition, she also has a habit of switching emotions on a dime, crying one second and smiling the next. Most people seem to ignore this aspect, but almost everyone is deeply unnerved by it.
Despite this, Yasu shows glimpses of a deeper personality. She repeatedly displays signs of low self-esteem, often comparing herself to 'lowly' creatures or objects, such as bugs. She seems to hold herself below the rest of the cast, viewing herself as someone who doesn't belong anywhere but as a messenger for her religion. She also appears to be very shy, and deeply afraid of coming off as a nuisance, such as when she choose to wait until everyone else left before starting to sing. In spite of her fervent devotion to her religion, she shows a great deal of concern and love for the other girls, wholeheartedly believing that she can guide them to 'salvation'.
Being her roommate, Yasu is closest to Touka out of any of the girls. Despite not disclosing anything about her life, Touka's been able to slowly pick up on Yasu true personality by spending time with her, taking on a role resembling a mother. Touka is often left to keeping an eye of Yasu, making sure she doesn't hurt herself or bother the other girls.
- "Praise be!"
- Yasu keeps a collected of stuffed bunnies in the church, most notably 'Penemue', 'Wormwood', and 'Yomiel'. She claims there are many others 'hidden in the background'.
- It's possible to snap Yasu out of her rants of religious fever by poking her nose. This only seems to work 75% of the time, and is only effective if done by Touka.